We've seen video doorbells before, that let you see who's at your door via an app on your smartphone. We've also seen smart door locks, that let you digitally control who is allowed to enter your home ...

Gate Sentry's new Sentry Solo solution replaces hardware-dependent access devices with a mobile-first platform, simplifying access management and eliminating initial capital investments and the ...

Introducing Sentry Solo's VirtualKey & VirtualKeypad - we have reverse-engineered access control, making it hardware-free, reliable, and affordable. The VirtualKey allows users to open their desired ...

The circuit was designed to function as an electronic keyboard using CMOS 4081 integrated circuit. Keypad – a set of buttons arranged in a block which usually display digits and other symbols but not ...