Abstract A monitoring feature, such as, for example, a pen cap, for an
insulin delivery device may include at least one circuit adapted to detect at least one of a capping or
decapping of the pen cap from an
insulin pen and a processor for using information to the at least one of a capping or
decapping of the pen cap. A monitoring feature for an
insulin delivery device includes at least one circuit adapted to detect use of the
insulin delivery device. USER Sensor Sensor Data Data GLUCOSE
SENSOR SYSTEM 101 v SECOND FIRST ACCESSORY ACCESSORY MOBILE 103 102 APPLICATION g 104 MANUEL MANUEL DELIVERY DELIVERY DEVICE DEVICE 107 106 108 WEB x SERVICES 105 FIG. 1A 20 24 22 75 63 23 O ct 2 02 4 2 0 2 4 2 2 7 5 6 3 2 3 O c t 2 0 2 4 U S E R S e n s o r S e n s o r W O 2 0 1 9 / 1 1 8 5 3 1 D a t a G L U C O S E D a t a S E N S O R S Y S T E M 1 0 1 S U B S T I T U T E S H E E T ( R U L E 2 6 ) F I R S T S E C O N D A C C E S S O R Y A C C E S S O R Y M O B I L E 1 0 2 1 0 3 A P P L I C A T I O N 1 / 3 9 1 0 4 M A N U E L M A N U E L D E L I V E R Y D E L I V E R Y D E V I C E D E V I C E 1 0 6 1 0 7 1 0 8 W E B S E R V I C E S 1 0 5 P C T / U S 2 0 1 8 / 0 6 5 0 6 7 F I G . 1 A