Event check-in without paper lists
Replace clipboard queues with a single scan that opens registration or check-in.
Poster at eye height
Place the code near the entrance at about 1.4–1.6 m. Floor stickers get stepped on; waist-level posters work for phones.
Short URL payload
Shorter links make denser-friendly codes. Test with older phones before doors open.
Last-minute programme changes
If the landing page may change on the day, prefer an editable link via QRcode Global so printed posters stay valid.