Blue2Factor authenticates users without any user interaction by verifying that the device that is being used to sign into a domain is in close proximity to one of the user's other devices. For example, if a person is signing into a domain on their computer, Blue2Factor makes sure that their phone is nearby.
Authentication is instantaneous so users can be validated each time a domain is visited. And unlike other 2FA solutions, Blue2Factor is immune to second factor phishing.
Took restriction off of the length of BLE communication.
Ratings and Reviews
With Family Sharing set up, up to six family members can use this app.