Making a Digital Door Lock Smart with a Raspberry Pi

How can you make a door lock smart? While a standard lock can be made smart by adding a servo (several systems can be purchased that help you do this) digital keypad locks can also be enhanced.

Secret Cola Bottle Spycam

Is someone snooping on your stuff? Want to protect yourself from people’s mischief? Big camera on the wall far too obvious to catch a perpetrator in the act?