二维码 vs PDF417
QR codes are true 2D matrix codes while PDF417 is a stacked linear symbology. PDF417 holds more raw data (2,710 bytes vs 2,953) but requires a larger area. PDF417 is mandated for US driver's licenses; QR codes dominate mobile scanning.
QR codes are true 2D matrix codes while PDF417 is a stacked linear symbology. PDF417 holds more raw data (2,710 bytes vs 2,953) but requires a larger area. PDF417 is mandated for US driver's licenses; QR codes dominate mobile scanning.