Question App controlled privacy locks

[paulbhande]

I want to have like 5 lockers or drawers, each locked but individually unlockable by me sending a user a code. They can use the locker with that code until I take it back or change it. I am open to home-rolling this with Arduino, but perhaps there is a (dirt) cheap off-the-shelf solution? Ideally any app would be open source, but I realise that may be asking a lot.

 

[rgd1101]

so like a amazon locker?