CHAVEIRO PARA SELEÇÃO DE CONTEÚDO A SER DISPONIBILIZADO A USUÁRIOS ATRAVÉS DE NFC POR APROXIMAÇÃO

Description

1 / 10 “KEYCHAIN ​​FOR SELECTING CONTENT TO BE MADE AVAILABLE TO USERS VIA NFC BY PROXIMITY. 001 This patent application refers to a KEYCHAIN ​​FOR SELECTING CONTENT TO BE MADE AVAILABLE TO USERS THROUGH NFC BY PROXIMITY, which deals with the development of a remote function management device by proximity, based on NFC (Near Field Communication) technology embedded in a keychain, equipped with an NFC card to be applied to a cell phone or any other device that allows active and passive communication between the two parties that cooperation is desired. BACKGROUND OF THE INVENTION 002 In recent years, the spread of smartphones and the expansion of tablet PCs have led to a significant increase in the use of mobile devices, and the development of various mobile-based services is also increasing due to the proliferation of wireless internet infrastructure. 003 In particular, as the use of smartphones equipped with NFC readers is spreading, service companies that utilize NFC technologies, such as mobile payments and mobile coupons, are gaining a lot of attention. 004 However, the use of NFC technology is not yet diverse, and a method for promoting convenience or user achievement has not yet been presented for promotional or guidance purposes. 005 An NFC system is basically composed of the NFC tag and the NFC reader [6]. This reader is a given device, be it a smartphone, a tablet or a computer, that has an internal NFC chip, in order to enable the use of this technology. Both the reader and the tag can have the Petition 870250074174, dated 08 / 21 / 2025, page 4 / 18 2 / 10 Two functionalities, for example: the tag can be found on stickers or be the cell phone or a computer itself, just as the computer and cell phone can also function as a reader. 006 This system can operate in both active and passive modes. In active mode, the two devices involved generate their own radio frequency fields, thus being able to share information between them. In passive mode, the radio frequency field is generated by only one of the devices, thus being responsible for communication between them; in this configuration, the active device is usually the reader and the passive device is the “tag” [6]. 007 The NFC system, as the name suggests – near field communication – establishes its communication with radio frequency signals, through the proximity of devices, one of which is the initiator, which will generate the transmission, and the other the target, which will receive the generated signal. This communication occurs from the 13.56 MHz band, and its data transmission speed can vary between 106.212 and 424 kb / s [7]. However, it has also become possible to work, although not officially, with a maximum rate of 848 kb / s. 008 As already mentioned, the maximum operating distance can reach 20 cm; however, normally and by default, the operating distance used is up to 10 cm. However, NFC has the ability to enable communication even when devices are physically separated. To enable this communication, the connection is initially established via NFC, but then another wireless communication technology with a greater range will take over, which could be Bluetooth or Wi-Fi. 009 The NFC system offers numerous benefits for both consumers and businesses. Its use is intuitive, being Petition 870250074174, dated 08 / 21 / 2025, page 5 / 18 3 / 10 It's only necessary to bring the tips of the NFC system close together, without needing to touch them. Furthermore, it allows for the automation of tasks in which it is used, and it performs faster and more efficiently than other wireless technologies. NFC is a versatile technology that can be used in various environments and for diverse purposes. Furthermore, the technology is based on uniform and open standards, meaning its underlying layers follow universally implemented standards. Additionally, NFC facilitates quick and simpler setup of wireless technologies like Bluetooth and Wi-Fi. 011 Due to its very short operating distance, it offers more secure transmission, preventing interference from other signals, and is also a robust technology built to support secure applications. The security of this technology will be discussed in more detail later. 012 NFC technology is still a novelty in the market. Although it has existed for some time, it is a relatively unknown technology. Currently, many cell phones have NFC enabled on their devices; however, most people still do not know the power of this technology and, therefore, do not know how to use it. In other words, despite being a widespread technology, the lack of knowledge is still enormous. 013 Patent BR 10 2022 014124 0 consists of an electronic device that aims to issue warnings about the vehicle's status in relation to the municipal vehicle rotation system, and / or other personalized and / or pre-programmed warnings to prevent forgetfulness. It has a body made of plastic or similar material

[11] , with a display [2] and buttons (6), (7), [8] and [9] on its front and a double-sided tape

[12] on the back, internally it has Petition 870250074174, dated 08 / 21 / 2025, page 6 / 18 4 / 10 a microcontroller (1); connected to buttons (6), (7), [8] and (9); to the display (2); to a sensor [5] which can be a motion detector, vibration detector, acceleration detector, or infrared LED sensor and receiver; to a battery (10); to a voice circuit (3), which emits messages in a speaker (4), which may or may not have integration with a mobile application. The device can be easily fixed with double-sided tape to the user's home door or to the inside of the vehicle door, can be placed on a keychain or other object of the user's choice, and can also be installed next to the vehicle's electrical system. It may have other optional functions. Patent BR 20 2016 026288 2, characterized by its plastic structure, features a compact design similar to a real car key, can be operated with just one hand, and worn as a keychain attached to the waist. It has an internal circuit operating at 2.4 GHz, arranged in such a way as to allow operation through the activation of five buttons, which can be pressed simultaneously, directing the car forward, forward to the right, forward to the left, backward, backward to the right, and backward to the left. It also features functions to lock and unlock the car, emitting an alarm sound, or a function to turn the motor on and off, emitting a motor starting sound, depending on the car's configuration. 015 Patent PI 1005483-9 consists of a box made of plastic or similar material, with an acetate lid, with a support for attaching a carabiner, thus forming the structure of a keychain. The carabiner is connected to a closed hook with a screw thread, which passes through a spring, and with a nut that closes the reservoir inside which are 6 movable spheres. By pulling the carabiner, the spring is compressed and the reservoir is opened to release the said spheres, which will deposit on any object. Petition 870250074174, dated 08 / 21 / 2025, page 7 / 18 5 / 10 of the numerals from 01 to 00, engraved in low relief on the inner base of the box, surrounded by raised areas, thus forming the prediction for the aforementioned games. The names of the games or advertisements may be written on the front and sides of the lottery prediction keychain. 016 The objective of this application is a keychain with NFC images and tags, forming a union of digital [NFC] and analog (images) information, improving communication and expanding the functionality of keychain use. 017 The objective of this application is a keychain suitable for use in commercial sectors where it is personalized and multifunctional, serving as a contact tool. This allows the bearer to use the product as a promotional tool, functioning as a business card, which, when brought close to a potential customer's mobile phone, can have its programmed data transmitted via the customer's NFC reader. 018 The objective of this application is a key fob that can also be used as a service evaluation mechanism, directing the recipient to the key fob's website or review page. How to direct the customer to the review page of the key fob's owner's company. 019 The objective of this application is a key fob, to operate in the music industry, where it can be used as a promotional tool for established or emerging artists who want to publicize their work on social media, albums, singles, and more. 020 The objective of this application is a keychain that assists visually impaired people by keeping contact information, addresses, and health data safe. Elderly people can also use the keychain as a means to quickly call for help in case of a fall or domestic accident. In addition, it allows third parties to provide first aid or make contact. Petition 870250074174, dated 08 / 21 / 2025, p. 8 / 18 6 / 10 with a family member bringing their cell phone close to the elderly person's NFC Multifunctional Keychain. 021 The objective of this application is a keychain, so that people on the autism spectrum can also have their data saved in this keychain, facilitating assistance in case of speech impairment and other comorbidities that affect communication. They can even configure the keychain to open a page that explains the neurodevelopmental disorder to other people. 022 The purpose of this application is to create a keychain that parents can personalize to include their contact information and leave with their young children so they can receive assistance from third parties in case of any problems. For example, if the child is very young and gets lost, the keychain can be used to find the child's parents' contact information. 023 The objective of this request is a key fob, within the governmental sphere, whose applications follow the line of home service, but as a document validator. The vast majority of documents currently have QR codes that validate the authenticity of a document. By programming the key fob with a portable copy of the document, authorities can access and attest to the authenticity of the data in this document through proximity. 024 The objective of this application is a music keychain based on NFC that is capable of attaching an NFC tag that stores the URL information of an event's content, to deliver it to targets to provide the event content, to transmit the URL information stored on the NFC tag to the user's smartphone to allow the smartphone Petition 870250074174, dated 08 / 21 / 2025, p. 9 / 18 7 / 10 Access the event website linked to the URL information to provide event content, such as brochures and invitations, via smartphone. 025 In order to obtain a perfect understanding of what has been developed, illustrative drawings are appended to which numerical references are made together with a detailed description that follows, where: Figure 1 shows a schematic view of the key ring. 026 As illustrated in the figure and its details, the “KEYCHAIN ​​FOR SELECTING CONTENT TO BE MADE AVAILABLE TO USERS THROUGH NFC BY PROXIMITY” to achieve the above objective, the music promotion keychain is based on NFC according to an aspect of the present invention to produce promotional content based on promotional information entered by the user to store in a database, corresponding to the location where the promotional content is stored. A processing unit to generate URL information; An NFC tag encoding unit encoding the generated URL information in NDEF message format and encoding the URL information encoded in NDEF message format by TLV (Type, Length, Value, Type, Length, Value);And an NFC tag input unit configured to store TLV-encoded URL information on the selected NFC tag when an NFC tag with adequate memory capacity to store URL information is selected by the processor based on the size of the TLV-encoded URL information. The processor is characterized by the fact that when the customer's smartphone near the NFC keypad connected to the NFC tag is connected to the promotional page linked to the URL information; Petition 870250074174, dated 08 / 21 / 2025, page 10 / 18 8 / 10 transmitted from the NFC tag and delivers promotional content to the smartphone. 027 As shown in FIG. 1, the NFC-based key fob of the present invention includes an interface unit 1, a processing unit 2, an NFC tag encoding unit 3, an NFC tag input unit 4, and a database 5. 028 Interface unit 1 is connected to a computing device, such as a user's PC, so that the user can upload and input information files stored on the user's personal keychain, and the user directly inputs a text file or a microphone via their own keyboard. It receives and processes the generated audio files and the video files captured by the camera. 029 To enter the information, interface unit 1 first prompts a user to register in order to receive permission to use the service to be produced by a registered user. When selected to enter promotional information, such as the material to be promoted, it transmits the promotional information entered by the user to processing unit 2. 030 Meanwhile, the NFC tag encoding unit 3 encrypts the member ID generated at the time of user registration in the encryption block and transmits the encryption key and the encrypted member ID used for member ID encryption to the database 5 for storage. 031 Processor 2 processes the promotional information entered (text, image, video, voice, music, etc.). 032 Processor 2 displays the basic frame types already prepared through interface unit 1 and prompts the user to select one. Petition 870250074174, dated 08 / 21 / 2025, page 11 / 18 9 / 10 of them, or the user directly creates a new basic frame type directly through the interface unit 110. You are prompted to select the frame type you created. 033 The information to be recorded on the tag is determined by the keychain manufacturer according to the requests. 034 The NFC tag encoding unit 3 performs NDEF (Text, URL, vCard, MIME) encoding on the information to be registered on the tag. 035 The NFC tag encoding unit 3 encodes the generated URL information in NDEF Uniform Resource Identifier (URI) message format and encodes the URL information encoded in NDEF URI message format by TLV (Type, Length, Value, Type, Length and Value) to be transmitted to processor 2. 036 Processor 2 selects an NFC tag with adequate memory capacity to store URL information based on the size of the TLV-encoded URL information between NFC tags. The NFC tag information and the URL-encoded information to be stored on the selected tag are stored in database 5. 037 The NFC tag input unit 4 stores the TLV-encoded URL information on the NFC tag 6 selected by processor 2. 038 The NFC tag 6, in which URL information is stored, is attached to the key fob 7, which has a variety of designs according to the user's preference, and is delivered to persons designated by the user. 039 In light of the above, it is clear that the "KEYCHAIN ​​FOR SELECTING CONTENT TO BE MADE AVAILABLE TO USERS THROUGH NFC BY PROXIMITY" offers significant advantages, since the sale of physical musical products, such as CDs and... Petition 870250074174, dated 08 / 21 / 2025, page 12 / 18 10 / 10 DVDs are a way for artists to provide fans with some kind of convenience. With this keychain, fans can quickly access digital content. Even fans who are less tech-savvy can access their favorite music simply by bringing the keychain close to their cell phone. These keychains benefit both sides of the industry: music professionals and fans. In addition to fans, artists and record labels can use the NFC Multifunctional Keychain to promote their work, create promotional gifts, and even sell them as official brand products. 040 Because it is innovative and not previously understood within the state of the art, it perfectly fits within the criteria that define an invention patent. Its claims are as follows. Petition 870250074174, dated 08 / 21 / 2025, page 13 / 18

Claims

1 / 1 CLAIMS 1- “KEYCHAIN ​​FOR SELECTING CONTENT TO BE MADE AVAILABLE TO USERS THROUGH NFC BY PROXIMITY, characterized by a processing unit to generate promotional content based on promotional information entered by the user and store the promotional content in a database, and generate URL information corresponding to the location where the promotional content is stored; encode the generated URL information in an NDEF message format and NDEF message format, an NFC tag encoding unit encoding TLV [Type, Length, Value, type, length, value] encoded by the URL information;and an NFC tag input unit configured to store TLV-encoded URL information on the selected NFC tag when an NFC tag with adequate memory capacity to store URL information based on the size of the TLV-encoded URL information is selected by the processor, NFC-based keychain processing unit to deliver the promotional content to the smartphone when the customer's smartphone is near the NFC tag attached to the promotional page linked to the URL information transmitted from the NFC tag Pad music device. Petition 870250095971, dated 10 / 21 / 2025, page 5 / 6

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