ITPEC IP April 2021 Question 91
Which of the following systems can be realized through the use of RFID?
Explanation
An electronic tag on a parcel for checking its shipping history — what RFID makes possible.
RFID (Radio Frequency Identification) stores an ID in a small IC tag and reads it by radio with a reader/writer, without contact and without a line of sight; several tags can be read at once. A tag on each parcel is read automatically at every depot, and the reading points recorded against the ID form the parcel's shipping history.
Answer (d)
Why not others:
- •(a) — sending patients' images and voice from a remote site over a network is telemedicine, a use of communication networks
- •(b) — an ATM card is read by inserting it into the machine (magnetic stripe or contact IC chip) and identifies the account, not an electronic tag
- •(c) — reading product information from barcodes at the checkout is a POS system with optical barcode scanning
Key rule: RFID identifies an object by radio from a tag attached to it, contactless and several at a time; a barcode needs an optical reader aimed at a printed pattern.
Business Industry · AI-written, may contain errors
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