There are two main type of locks in ChastiKey: fixed locks and variable locks.

Fixed locks run their duration without changing. If you want a lock to last an exact amount of time then fixed locks is what you’re after. Unlike variable locks (explained below) there’s no chance of releasing early, not without purchasing a key to unlock.

Once the lock has been set up you will see a countdown showing how long you have until release, unless of course you’ve chosen to hide the timer.

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Fixed locks can be set up to last between 15 minutes and 365 days.

Variable locks use a card system where you get a chance to release if you find a particular card. Like fixed locks you can set variable locks to run between 15 minutes and 365+ days. You will get a chance to pick a card from a deck every 15 minutes, hour, or day, depending on the settings you chose. If you reveal the required number of green cards the lock will finish and you will be able to unlock your chastity device or self bondage restraints.

There are a number of different cards: green, red, yellow (which add/remove reds), freeze , reset, and double up. Each are explained below. There will always be at least 1 green card assigned to each lock. The number of colour of cards assigned to the deck will depend on the options you choose when setting up the lock. The number of cards assigned to the lock can be increased/decreased during the lock session depending on what cards you’ve revealed each go.

Because the number of cards can increase/decrease each go you never really know how long you will be locked for which is why it is called a variable lock.

Every 15 minutes, hour, 3 hours, 6 hours, 12 hours or 24 hours you will pick one card from a deck of face down cards.

It looks like a fixed lock in your list except the countdown shows when you can next go, and it shows the percentage and count of each card colour that’s in the deck:

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A lock can have multiple greens in the deck, but a maximum of 20. If the lock starts with more than 1 green than all greens would need to be found. If it starts with only 1 green cards than only 1 green card will need to be found, even if there’s more than 1 green card in the deck (added during the session).

If you reveal the required number of green cards you will be shown your combination code that will unlock your safe or combination padlock that’s holding your key. The lock is now finished and you’re able to unlock your chastity device or self bondage restraints. Before revealing the combination you can choose to reset the lock and not show the combination just yet, do a 50/50 gamble, let your keyholder decide, or leave it and decide later.

If you reveal a red card you will have to wait before you can try again. Depending on the settings you chose that next chance will either be in 15 minutes, an hour, or 1 day etc.

You can also add red cards during a session but once added the action can’t be undone.

A deck can have a maximum of 399 reds.

Yellow cards either add or remove red cards from the deck. The number of red cards that will be added or removed is shown on the card. When you reveal a yellow and the red cards have been added or removed you will immediately get another chance to pick another card.

Yellow cards can really increase the duration of the lock if you’re very unlucky and get lots of yellow cards that add reds. Of course they can also help you release early if you’re lucky enough to get lots of yellow cards that remove reds.

When setting up the lock you have the option to include or not include yellow cards. You can also add yellow cards during a session (except on locks that are controlled remotely by a keyholder or bot)

A deck can have a maximum of 199 of each type of yellow, so a total of 995 yellows.

Freeze cards when revealed will freeze the lock for 2-4 times the regularity of the lock, so if you’re picking cards every hour the lock will be frozen between 2 and 4 hours. If you’re picking every 15 minutes it will be frozen between 30 minutes and 1 hour. Once frozen you’re not able to do anything and will have to wait until it unfreezes. You won’t know the exact time it will be frozen for so you will need to keep checking when it gets closer to being due.

The keyholder can create locks to share with up to 20 freeze cards but once the lock has been loaded by a user they are not able to add more freeze cards unless the user said they trusted the keyholder when loading the lock.

If trusted the keyholder can also freeze the lock without you needing to find the card, and can keep you frozen for as long as they choose.

A deck can have a maximum of 20 freeze cards.

When revealed, the number of reds and yellows in play will double. It doesn’t double any of the other cards. When it doubles the yellow cards in play it doubles each of the type of yellows in play, so if you had 3 yellows that add +2 reds when revealed you will end up with 6 yellows that add +2 reds.

If you have several of these in the deck the deck can grow quite quickly so keep that in mind before adding too many. You may want to include a reset card or two for that chance to bring the card count back down before it gets too high.

The keyholder can create locks to share with up to 20 double up cards but once the lock has been loaded by a user they are not able to add more double up cards unless the user said they trusted the keyholder when loading the lock.

A deck can have a maximum of 20 double up cards.

‘Reset Lock’ cards will restart the lock if drawn. It restarts with the original number of greens, reds, and yellows the lock had when it was first created. The number of other cards like reset, double up and freeze remain the same as they were before it was reset. Only greens, reds, and yellows change.

Reset cards also clear any accumulated chances you had before the reset card was revealed.

The keyholder can create locks to share with up to 20 reset cards but once the lock has been loaded by a user they are not able to add more reset cards unless the user said they trusted the keyholder when loading the lock.

A deck can have a maximum of 20 reset cards.

‘Go Again’ cards will only appear in version 2.4.2+ and only in decks where the card information is hidden. These can't be added when creating a lock, during a lock, or by the keyholder. They are used to fill the deck and to make it a little harder to really see how many cards you have. If you had 20 of the cards listed above and 7 go again cards you won't really know how many of the 27 total cards are normal cards.

When you reveal a go again card you instantly get to pick again. These do not delay the lock in anyway apart from the extra second or two revealing them each turn. And they do not affect your accumulated chances.

If the lock is created with card info hidden, or a keyholder hides the card info during the session then the app will fill the deck with 0-50% of these go again cards.

If a lock is reset with the reset card, or started again after finding all of the green cards then the number of go again cards also reset.

A deck can have a maximum of 399 go again cards.

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It is possible to create a variable lock that is almost guaranteed to run for a minimum duration, where you’re not able to reveal the required number of green card(s) until the minimum duration has passed.

In order to create a variable lock with a minimum duration you need to set the minimum number of red cards above 1 and for the minimum and maximum numbers to be different from each other.

If both the minimum and maximum numbers are the same it will treat the minimum duration as 1 hour or 1 day depending on the other options.

Here’s some examples for an hourly lock:

Setting the minimum and maximum with the values 5 and 10 will create a lock that has between 5 and 10 red cards and will last at least 5 hours. You will not find the green until the 5 hours have passed. Setting the minimum and maximum with the values 1 and 10 will create a lock that has between 1 and 10 red cards and will last at least 1 hour. You will not find the green until the 1 hour has passed. Setting the minimum and maximum with the values 10 will create a lock that has 10 red cards and will last at least 1 hour. You will not find the green until the 1 hour has passed. It doesn’t make sense to have the minimum duration set as 10 in this instance so it defaults to 1. Calculating Chance of Release and Duration of Lock A variable lock in your list of locks will look like this:

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This shows a countdown until your next chance of picking a card and the percentage chance of revealing each colour (the 4th circle). For this lock there’s 6.7% chance of finding the green card.

While it’s simple to calculate the chance of picking the green card based on the total number of cards, it’s not possible to calculate the duration of the lock. When setting up the lock an approximate duration is given based on the number of red cards you choose, it doesn’t take into account the number of yellow cards, and the fact that each yellow card could add or remove cards. Another reason why it’s not possible to calculate the duration on a variable lock is because you might be really really lucky and find the green card in the first few days, even if you had 30 red cards in the deck, and 15 yellow cards.

However 30 red cards and 15 yellow cards if you’re really unlucky could turn into a 75 day lock. This is if the green card was revealed last and the 15 yellow cards each added 3 red cards to the deck. The initial 30 red cards and the 45 red cards added from the 15 yellow cards is what gives you a total of 75 days if you picked the green card after all of these cards.

The chances of the above scenario happening are next to nothing, but when setting up a variable lock and adding yellows you may want to factor in the worst case scenario i.e. each of those yellow cards could add up to +3 red cards, and keep in mind that you may be unlucky and reveal a lot of those before you reveal the green card(s).