FASTag is an electronic toll collection system in India, operated by the National Highway Authority of India (NHAI).It employs Radio Frequency Identification (RFID) technology for making toll payments directly from the prepaid or savings account linked to it. It is affixed on the windscreen of the vehicle and enables to drive through toll plazas without stopping for transactions. The tag can be purchased from official Tag issuers or participating Banks and if it is linked to a prepaid account, then recharging or top-up can be as per requirement.As per NHAI, FASTag has unlimited validity. 7.5% cashback offers were also provided to promote the use of FASTag.
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