In tem m\u00e3 v\u1ea1ch<\/a><\/span>.<\/span><\/p>\nV\u00e0 l\u1ea7n n\u00e0y, l\u1ee3i \u00edch c\u1ee7a m\u00e3 QR n\u00ean t\u1eadp trung v\u00e0o m\u1ed9t t\u01b0\u01a1ng lai b\u1ec1n v\u1eefng h\u01a1n, kh\u00f4ng ch\u1ec9 c\u00e1c tr\u01b0\u1eddng h\u1ee3p kh\u1ea9n c\u1ea5p v\u1ec1 s\u1ee9c kh\u1ecfe. L\u00fd do l\u00e0 g\u00ec? B\u1edfi v\u00ec t\u1ea5t c\u1ea3 c\u00e1c lo\u1ea1i th\u00f3i quen m\u1edbi \u0111ang h\u00ecnh th\u00e0nh. Trong th\u1eddi k\u1ef3 d\u1ecbch b\u1ec7nh, r\u1ea5t nhi\u1ec1u \u1ee9ng d\u1ee5ng QR code tuy\u1ec7t v\u1eddi ra \u0111\u1eddi, sau khi cu\u1ed9c s\u1ed1ng tr\u1edf l\u1ea1i b\u00ecnh th\u01b0\u1eddng, ng\u01b0\u1eddi ta v\u1eabn s\u1ebd ch\u00fa \u00fd \u0111\u1ebfn nh\u1eefng \u1ee9ng d\u1ee5ng n\u00e0y. Ngo\u00e0i ra, c\u00e1c \u1ee9ng d\u1ee5ng v\u1ec7 sinh \u0111\u00e3 kh\u01a1i d\u1eady s\u1ef1 t\u00f2 m\u00f2 v\u1ec1 m\u00e3 QR v\u00e0 sinh ra nhi\u1ec1u \u1ee9ng d\u1ee5ng kh\u00e1c. C\u00e1c kh\u1ea3 n\u0103ng b\u00ean trong n\u00f3 l\u00e0 r\u1ea5t l\u1edbn.<\/span><\/p>\n