Simply enroll (for free), fill your pocket (load funds) by credit card or debit card, and pay. Use at any participating Pocket location or wherever Discoverâ„¢ is accepted. Payment at participating Pocket locations is done in-store via QR code. Payment at Discoverâ„¢ locations is done by adding your Pocket account to your Apple Wallet or Google Pay account, and making purchases in-store or online.