Staff pay at the canteen by holding their phone a few centimetres from the card reader. Which wireless technology is this?
Le personnel paie à la cantine en approchant son téléphone à quelques centimètres du lecteur de cartes. Quelle technologie sans fil est utilisée ?
Answers
AWi-Fi 6Le Wi-Fi 6
B4G LTELa 4G LTE
CInfraredL'infrarouge
DNFC (near-field communication)Le NFC (communication en champ proche)
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