Azamar says:

I was googling around trying to figure out a system to lock up my pot so I wouldn't be tempted for a while, but to have it become available automatically after a set period of time.

I ended up stumbling into the subculture of chastity belt fetishists, people who derive pleasure from locking themselves up in high tech chastity belts and giving the keys to some person or machine that has power over them.

The site timelock.rules.it has a program [Timelock, $20] that allows someone to use encryption to lock themselves up for a set or random amount of time, or even to send the key to their chastity belt over the internet to a trusted "keyholder".