Stealth Print: Steganography

Steganography that survives printing. Hide a URL or short message inside a photo, then print it. Point your iPhone at the paper and the message appears. No visible code, no sticker, no extra space on the page. Many hidden-message apps work only with image files. Stealth Print is built for ink on paper. EMBED • Choose a photo and type a URL or message • Pick a print size: L print, postcard, A5 or A4 • Choose how subtle the pattern should be • A read-back check runs after embedding • Save, print at exact size, or share as PNG READ • Hold your iPhone 20-30 cm from the print. It reads automatically • Works at an angle and when only part of the image is in view • Turn on the flashlight in dark rooms or under warm bulbs • Read from a photo in your library PASSWORD PROTECTION (PRO) Protect a message with a password you agree on separately. Unlocking is free, so anyone you give the password to can read it. PRIVATE BY DESIGN Everything runs on your device. Photos, messages, passwords and camera video are never sent anywhere. No account needed. GOOD TO KNOW • Up to 64 bytes on an L print. A password uses 16 bytes • The pattern may show as faint grain on smooth areas. Choose Subtle if you notice it • Results depend on the printer, paper and light • The app can tell that a message exists. A password protects only the text Pro is a one-time purchase.