What is coin app sentinel?

Coin app is a sentineIX which is a "Semtinel eXtension" known as a device,

It's a extension of the phone verification for the use of phone. 

Whenever you scan any SentineIX, it shows a COIN app. A real person are providing a real data in a real place of the world, 

If we discuss about the benefit of the using this app then

you will shock to know that I provide the exchange of valuable data.

The secret behind of this is you can earn more than 12x after scanning or connecting a SentinelX with bluetooth.

To get 12x the prizes, you simply need one SentinelX nearby.