PiShock.com has a small internet enabled box for you keys. There is a whole system timers and keys that can be used in both SB and chastity. I have the Pi Shock but I have not tried the vault, so I can't review it for you.
There is a PiShock discord where the developer is very active.
Have fun and always have a backup release ( worst case the vault is plastic so you could smash it with a hammer)
