QR codes for payments

PayPal, crypto & contactless checkout — a practical guide

A payment QR code turns a phone camera into a checkout. Instead of typing a long address or hunting for a card reader, customers scan and pay in two taps. Because the code just encodes a link or address, it works for tips, invoices, donations and in-store checkout alike.

PayPal.me

Encode your PayPal.me username with an optional amount and currency. The scanner opens PayPal pre-filled, so friends, clients and supporters can pay without you sharing an email. Use the PayPal content type in QRVolt and add the amount only when it is fixed (a set price, a donation tier).

Crypto payments

For Bitcoin, Ethereum, Litecoin, Dogecoin or Dash, encode the wallet address directly. Always double-check the address character-by-character before printing — crypto transfers are irreversible. A branded plate and high error correction keep the long address scannable on stickers, cards and screens.

Contactless & in-store

Place a payment QR at the counter, on the receipt, or on a poster. It is cheaper than a card terminal and works offline on the print side (only the customer needs a connection). Pair it with a short caption like “Scan to pay” so the intent is obvious.

Safety & scannability

  1. Verify before printing. Scan the code yourself to confirm it opens the right payment.
  2. Use ECC H. Logos and wear on printed codes need the recovery headroom.
  3. High contrast. Dark modules on a light, matte background beat glossy plastic.
  4. Quiet zone. Keep a clear margin so scanners lock on instantly.