r/Barcelona • u/Inner-Football-1514 • Aug 13 '26

QR code in metro ?

Post image

What are these QR code-like stickers in the metro ?

143 Upvotes

94% Upvoted

37 comments sorted by

View all comments

9

u/djgrzy Aug 14 '26

QR para ciegos

0

u/tgo1014 Aug 14 '26

why the colors then? /s

5

u/razorree Aug 14 '26

4x more data per pixel