Nymi band

Nymi band
Category	Limb-mounted
Developer	Nymi, Inc.
Announced	December 2014
Released	Developers: December 2014 Consumers: (unreleased)
Price	150 USD (developer kit)
Operating system	none
Sensors	ECG
Weight	g (not indicated)
Controls	none
Data available	good
Risk factor	low
Standalone
https://nymi.com/

Nymi band is a wearable multi-factor authenticator in the form of a wrist-band that uses the user's heartbeat to uniquely identify them.

Main characteristics

Nymi is a electronic wrist band with a ARM Cortex M4 embedded processor, Bluetooth, NFC, and an ECG sensor. The band is a biometric identifier that uniquely authenticates the user by processing his his or her heart-rate. The band itself also act as a continuity circuit and the device's authentication feature will work only when the circuit is completed and the band fastened on the hand. The device communicates with the surroundings via a Bluetooth Low Energy or via a NFC antennas.

The state of the device is communicate by 5 LED lights on the side of the device. Information can also be conveyed by a vibration motor. And Nymi band also features an accelerometer and gyroscope so the user can use gestures to control the device.

The chassis is made out of Ethylene oxide sterilized plastic (ISO 10993-7:2008) and is water-resistant (IPX7, water splashes and up to 30 minutes of submersion in 1 m deep water).