Keyholding/Chastity
If this is your forte I can provide a comprehensive service. You will enter into an agreement, which will include a bond, for a period which can be renegotiated at any time.
Following a near ceremonial fitting of your own device, which I may well have taken you shopping for (after all a good tight fit is crucial!), you will then return at agreed intervals for torment and health checks. I may choose to release you temporarily.............or I may not, and even if I do I may choose to be so delightfully cruel before putting you away again.
Should you remove or tamper with the device without permission or fail to keep your appointments (without notification and very good reason), your bond will be forfeit. You will of course be subject to other punishments as my whim dictates