Some ideas:
1) Flash up a QR code (and/or NFC) on the device to allow for crypto payments/buy/sell.
2) Flash up a QR code (and/or NFC) to sell custom store tokens or loyalty points.
1) Flash up a QR code (and/or NFC) on the device to allow for crypto payments/buy/sell.
2) Flash up a QR code (and/or NFC) to sell custom store tokens or loyalty points.
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