How to Screenshot Your iPhone by Tapping the Back of It

Configuring Back Tap for Capture Workflows

Back Tap (Settings → Accessibility → Touch → Back Tap) turns the metal back of an iPhone into a button. Double-tap or triple-tap triggers any iOS action or Shortcut.

For knowledge capture: configure double-tap as Screenshot, triple-tap as a Shortcut that opens Nemos. Two consecutive taps captures and opens your capture library. The workflow: double-tap to screenshot → thumbnail appears → triple-tap to open Nemos → share from the screenshot thumbnail.

This is faster than any other two-step capture flow because both triggers are physical gestures that don't require navigating to the home screen.

Available actions include Screenshot, Camera, Spotlight, and any Shortcut you've created. Accessibility features often provide the most efficient workflows for power users — they were designed for ease of access, which translates to speed.

Related guides

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• Best screenshot apps reviewed
• How to search inside screenshots

Where Nemos fits

Nemos is a private second brain for iPhone that solves the "I saved it somewhere" problem. Every screenshot, voice memo, PDF, and link you save gets OCR'd, transcribed, and indexed on-device using Apple Foundation Models. Find anything by typing one word. Free. Apple-only. Free on the App Store.