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I'm glad I saw this post because I've been trying to find the tobiphone thing for ages. I remember seeing it in HN, but then I lost the page I couldn't remember what it was called, and it was oddly difficult to google (at least at the time).

One thing I've been thinking is that maybe a way to permanently lock my phone in greyscale mode would be sufficient to cure my phone addiction.

Gonna see if Claude has any solutions for me.

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In case someone out there is looking, here's an untested recipe to lock your android in greyscale mode. It removes the menu option for changing out of greyscale (untested).

Set grayscale:

adb shell settings put secure accessibility_display_daltonizer 0 adb shell settings put secure accessibility_display_daltonizer_enabled 1

Also clear any shortcut that could toggle it:

adb shell settings put secure accessibility_shortcut_target_service "" adb shell settings put secure accessibility_button_targets ""

Disable the menu that could undo it:

adb shell pm disable-user --user 0 com.android.settings/.Settings\$AccessibilitySettingsActivity adb shell pm disable-user --user 0 com.android.settings/.Settings\$ColorAndMotionActivity

Will report back if I try it.

Must have worked.

Buy an e-ink phone (Bigme or Hisense come to mind)

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