ACS ACR35 NFC MobileMate Card Reader ACR35 NFC reader plugs into the audio jack of your mobile device. Allows for NFC contactless applications, even for NFC phones and devices without NFC functionality Supports magnetic stripe contact cards and NFC contactless cards. ACR35 NFC reader has a rechargeable Lithium-ion battery and 3.5 mm audio jack Uses AES-128 encryption algorithm and DUKPT Key Management system to secure your data