Everyone has the same graduation photo; a letter locked to that day exists only once. daktilo prints the gift on paper and locks it to the day you choose — it stays closed until the reunion.
On the last day of school, everyone writes a letter; all of them lock to the same day. At the ten-year reunion a box of envelopes arrives at the table — the one gift the class gave itself.
Suggested opening: the 10-year reunion · fix the date today
Leave the sentence a student is not ready to hear today for the day they will be. The envelope handed over at graduation becomes a gift kept for years.
Suggested opening: graduation day
Write it the week they start school, lock it to diploma day. The day the caps fly, the envelope that comes out of the bag is a gift from the very start of the road.
Suggested opening: diploma day
On graduation night, write to yourself: what you hope, what you fear. Lock it to your first day of work — that morning, a gift from the night you set out is waiting.
Suggested opening: first day of work · or five years on
1. Fix the reunion date today — "ten years from today". Everyone installs daktilo; no account, no sign-up.
2. Everyone writes their letter; it is encrypted on the phone and printed as an origami envelope. The envelopes go into one box — whoever keeps it, keeps it.
3. At the reunion the envelopes are handed out and the QRs scanned; the gift opens that day — and only that day. We never see what is inside at any step.
The gift lives on paper, not on a server. For ten years it needs nothing from us — even if the company shut down, the envelope still opens on its day.
There is no early opening. Including for whoever keeps the box — part of the opening key cannot be derived before that date.
No accounts, no sign-up, no tracking. We never ask the class for an email; only you know who wrote the envelopes in the box.
If the paper is lost, the gift is lost — keep the box like a wedding album. That is also where the weight of an envelope comes from.