I run a small business and I would like to accept credit / debit card payments on my Android phone running #GrapheneOS

Does anyone know of an app or paired terminal which will work?

SumUp asked me to turn off Developer Tools, but still said the device didn't meet the security requirements for accepting payments.
They offer a Bluetooth paired card reader - but I don't want to spend £30 if it won't work with Graphene.
Anyone have experience *receiving* tap-to-pay on their GrapheneOS device?

Terence Eden reshared this.

in reply to Terence Eden

I am going to assume that the pedophile class will not allow you to receive payments though a device they can't spy on you from.

Your best move is probably one of those tablet cash register situations. That way you can keep all of their spyware on that device.

Of you could buy a used ATM, set it up in your shop and charge them a fee to get cash. It could save you on credit card fees...

in reply to Terence Eden

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Or a collection like this, depending on what you're trying to achieve...

(None of these need phones to work, but all of them except the SumUp Terminal can be paired with apps running on phones if necessary. That's not my interest in them — I use them with point of sale systems. The Square Terminal on the right is one of the ones we used on the bar at EMF in 2024.)

This entry was edited (Saturday, February 7, 2026, 10:57 AM)
in reply to Jordan

@thedarkener
I *do* know the answers to these questions. I've written extensively about it.

See, for example, shkspr.mobi/blog/2023/05/the-l…

Just because the OS is "built with security in mind" doesn't mean that it needs the regulatory needs of a bank.

in reply to abeorch

@abeorch @thedarkener
The banks'. That isn't a contentious question. It is their money at risk. They have to refund users. They get to choose their risk profile.
shkspr.mobi/blog/2023/05/the-l…