Time-lock a secret
Create a link that can't be opened until the moment you choose. A birthday message, a surprise, or a code that must stay closed until a set day.
Only people with the link can read it, and not before the time you choose. Not even us.
For the geeks: how secure is it?
Your message is locked with AES-256-GCM encryption on your device. The key is the part of the link after the #, which browsers never send to a website, so we only ever store scrambled text we can't read.
Our server refuses to hand out the scrambled text until the unlock time, using its own clock, so changing the date on a phone won't open it early. It's deleted 90 days after it opens.
Now give them this unlock code by text, phone or in person. Don't email it. They'll need it when the message opens, so tell them to keep it safe.
- Send this link to the person it's for. Anyone with the link can open it once the time comes.
- Until then, the link just shows a countdown.
- After it opens, the message can be read for 90 days, then it's deleted.