Part 4/9:
Upon powering the device, you'll see a Terms of Sale prompt. Scroll down to review and accept the terms by pressing the "OK" button. The device then displays a unique serial number, which should match the barcode on your backup card.
This step ensures the device was not tampered with during shipping, providing you peace of mind regarding its integrity. If the numbers don't match or if there are signs of tampering, contact support immediately.
Creating a Secure PIN
Next, you'll set up a PIN code. The Coldcard MK4 introduces a two-part PIN system: a prefix and a suffix, displayed as separate parts on the wallet backup card. This design provides an additional anti-shoulder surfing measure.