All the way from HCCP21 at Paralelni Polis, LNURLPoS! https://ift.tt/302nU6E LNURLPoS is completely offline, using a shared secret to encrypt a unique pin that can be used to verify payments. LNURLPoS uses the LNURL-pay protocol. LNURL-pay allows your lightning-wallet to make a secure request to a server to get a lightning-network invoice. So instead of scanning a massive ugly lightning-network invoice QR, you can scan a lovely little LNURL QR. **Payment workflow** * Merchant enters amount into LNURLPoS device * LNURL is generated in device and displayed for scanning (LNURL includes a unique pin encrypted using the secret key shared with the server) * Customer scans and pays * When the payment has cleared the customer is sent the decrypted unique pin * Merchant can compare and verify using the same pin displayed on the lNURLPoS https://ift.tt/2YxlEnN https://ift.tt/3FtokDo
source https://www.youtube.com/watch?v=ofCv2cHZ5b0
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