Using Aluminum Foil to Block Wireless Signals on Keys, Wallets, and Passports
Wrapping car keys, wallets, and passports in aluminum foil has gained popularity as a simple method to block unauthorized wireless signals. This practice aims to prevent relay attacks on keyless car entry systems and unauthorized RFID or NFC scanning of contactless cards and biometric passports. While aluminum foil can reduce the risk by acting as a barrier to electromagnetic waves, experts caution it offers only partial protection and should be complemented by stronger security measures for comprehensive defense against digital theft.
First-hand measurement across 2 sources
We measured how 2 outlets covered this story. No outlet gave this story a measurable political slant — there is no left–right reading to report. Overall sentiment is neutral (52/100). Lens Score 35/100.
Outlets measured: economictimes, firstpost. See how each one headlined and framed the same story in the source comparison below.
AI Analysis
Sentiment was consistent across outlets (50–55/100), indicating broadly factual reporting rather than editorialising.
Coverage timeline
firstpost broke this story on 29 Jul, 12:38 pm. Other outlets followed.