[vorejdajo]

It's not constant. I expect that people change wallpaper frequently.

[shadowgovt]

Unfortunately, constancy is irrelevant. If a malicious app is using this API to locate you, it can detect when your wallpaper changes and use its app_id (unchanged) plus wallpaper fingerprint (changed) to phone home with "Yo, this user's wallpaper thumprint is now Y."

[MrDresden]

Android dev here. Still have the same default wallpaper as my Pixel 3 came with 3 years ago.

[refulgentis]

That wallpaper would have the same 3 colors as many, many, other people. The problem here arises when your wallpaper is unique, no?

[Daniel_sk]

You can still use as input along with other parts that are accessible without any permissions - for example the android version, device name, IP address...

[gambiting]

Do they? I've had the same "live wave animation"(that looks like the PS3's XBM menu) for at least 5 years now and I don't see any reason to change it.

[eric__cartman]

It's been more than a year since I last changed my wallpaper.

[b112]

I've used the same wallpaper on every computing device I've owned, for the last 26 years.

[doublepg23]

With the downside of fingerprinting yourself it seems, would you be willing to share the wallpaper?

[b112]

It isn't special, merely a blue/green colour with mild dithering.

It is a little like looking at the morning sky.

It's on all phones, desktops, etc. And if I were to give it to you? Well. Maybe you're the NSA, maybe I'll be pulled off the street, thrown into a chair, and in a NDA-drugged, mildly confused state, be told "look, it is your desktop, see your familiar backgroud? You should enter your password."

No sir, I will not disclose my background image!! Sneaky! Good try though.

[yumaikas]

I mean, I go and set up ASCIIQuarium on every phone I have. Hunting down the APK gets harder and harder though.

[Daniel_sk]

I don't think an average person changes wallpapers frequently.