Leave a note.
Stay a stranger.
Paste a little QR code on your stuff that lives in public spaces. Anyone who needs to get in touch with you scans it, drops a note and you get a message on your phone without either of you ever exposing your personal information.
Print my QR code — free
Print it at home in a minute.
They scanNative camera, straight to a web page. Nothing to install.
You hear about itA push notification, up to 280 characters, one direction only.
Nobody learns anythingSenders never find out who you are, or whether the note landed. Change your code any time.