Co-keyholders, double padlock

Well that's a fun idea. Controlled by two keyholders, both of which have to be present to let you out.

There are things called lockout hasps that take multiple padlocks, but I think they are all too big for chastity purposes. You might be able to use one to lock a key holder which you keep but you need both your keyholders to unlock it. Alternatively one of your keyholders keeps the keyholder and the other has the key to unlock it.

If you can do a bit of metalwork this idea might work. You would have to get it accurate and you might need to get hold of long shackle padlocks. The idea is to take two padlocks. Unlock them and, somehow, fix the shackles pulled out as far as they will go. Perhaps glue or solder might do it. Maybe drill a hole in the bottom of the padlock, under the sliding side of the shackle and push in some epoxy glue or push in and solder in place a brass rod. Don't make the lock too hot as that will damage the springs inside.
Next, cut off the shackles as shown in the diagram, smooth off the ends and cut locking notches as in the diagram. The two padlocks should then lock together. If you can get it accurate and there is not too much movement in the point where shackle locks into the padlock you should need to unlock both padlocks to get them apart.

Also, what about an emergency key or keys?

 

There are full belts that use multiple locks. Otherwise someone who does custom cages may be able to accommodate. though it would be heavier and more bulky. If you have a piercing, there might be some on the market that use a separate lock to secure the piercing, which theoretically could be keyed differently.

I think it'd be easier to have a key box / key safe that needed 2 keys to open.

 

Another possibility - get an electronic safe that can have a 10 digit combination. Each keyholder has half the combination. Of course you won't be able to take the safe around with you, so all three of you will have to be wherever the safe is to let you out.

Again, what about an emergency key if you do this?

 

Two security wire tags might fit in the same hole

 

TERNENCE Ergonomic Design Chastity Device 2 Built-in Locks Male Chastity Belt Adult Game Sex Toy K650 (50mm/ L Size) : Amazon.co.uk: Health & Personal Care
There ya go. That'll do the trick....

 

If you remove the lock on the base ring, you are unlocked!

 

Each kh has one of each of the keys....

 

Single key holder would be great

 

If @Iron78 is correct, that means the either keyholder can unlock the device. @slavegeordio wants it to need both keyholders. Actually, in his third sentence he went further than that, saying that they both need to be present. That would require some sort of system where both keys have to be inserted at the same time.

 

Duh. Hehe. Apologies. Good luck finding what you want!

 

I think the best way to do this would be to get one of the lock boxes to put the standard key in, ensure you get a lockbox that can take 2 x padlocks

 

What about one of these: https://www.amazon.co.uk/Dual-Lock-Safe-Box-Standard/dp/B074H5SFPJ?th=1 . A bit expensive, quite large and weighs 13kg but it does have 2 keys and they both have to be in the locks at the same time.

Another idea, get a cheap electronic safe, mount two key switches in series with the battery, so the safe can only be opened with both switches turned on. Use locks which trap the key in the "on" position, so both keys have to be present to open the safe.

 

I believe that I remember seeing a cage that had 2 holes for locks

 

This thread has caused me to have a sort of fantasy idea. A group of self-lockers or maybe key holders. One safe requiring a key from each member of the group to be inserted simultaneously to open. No one gets unlocked until everyone agrees to open the safe. Perhaps an on-line version could be devised.

OK, it won't work in reality because of the risk that there will be someone willing to cheat and leave the others stuck.

 

I am envisioning something like in the movie where two need to turn two keys same time to "launch" a missile.

That would be interesting if one could only be released when BOTH turn their keys at the same time. Failure would cause the lock to disable...well thats probably too much.

 

A box that worked like this would be fairly easy to crate with a bit of research and some very basic DIY/electronics skills

 

Get a combo lockbox that your wife keeps the keys in at your house. And only the gf knows the combo. She has to come over to open the lockbox so your wife can get the keys out.

 

Is this what you are looking for
https://www.wish.com/product/cb2000...-chastity-belt-clear-57e53a38bd73601b6fa20a41