WONDER #2622: How Does a Key Card Unlock a Door?
Question 1 of 3
Which of these is NOT a common type of key card?
- Radio frequency identification (RFID)
- Light wave communication
- Near Field Communication (NFC)
Question 2 of 3
What is the difference between RFID and NFC cards?
- RFID cards are much larger than NFC cards.
- NFC cards can be programmed for two-way communication, while RFID cards are only one-way.
- NFC cards work the same way as those with a magstripe, while RFID cards are completely different.
- There is no difference between RFID and NFC cards.
Question 3 of 3
This Wonder was mostly about...
- why key cards are better than metal keys.
- how to program your smartphone to be used like a key card.
- how fast technology is changing.
- three types of key cards and how each one works.
Check your answers online at https://wonderopolis.org/wonder/How-Does-a-Key-Card-Unlock-a-Door.