Check out these braille business cards images:
Braille & QR Codes

Image by m.gifford
The card is shaped differently so that a blind user can feel the text braille instructions, a low vision user can read the important information in high contrast & because of the bump, blind users can use the QR codes to know which corner of the card to scan. Notice the ridge around the QR code in the bottom right. It’s brilliant! The second side is in small text.
accessibil-IT
Adam Spencer
aspencer@accessibilit.com
Most Accessible Business Cards

Image by m.gifford
Second side has full information in a smaller text. The first side is in braille.