It turns out you can use Play-Doh to unlock an iPhone protected with Apple's Touch ID fingerprint security.
Vkansee, a mobile security company, showed Tech Radar at MWC how it used Play-Doh putty to copy an iPhone owner's fingerpint by pressing on the putty with their finger.
They then placed the putty with the fingerprint copy against an iPhone's Touch ID fingerprint sensor. Apparently, after a few tries, the fingerprint copy on the putty unlocked the iPhone.
Speaking with TechRadar, Vkansee says the iPhone's Touch ID sensor reads fingerprints at a relatively low resolution— around 500 dots per inch (dpi). Conveniently, Vkansee makes fingerprint sensors that read fingerprints at a much higher 2000 dpi resolution, which wouldn't be so easily tricked by a fingerprint copy on Play-Doh.
This doesn't necessarily mean the iPhone's Touch ID fingerprint sensor isn't secure. You'd need to make someone squish their finger into Play-Doh to get their fingerprint and unlock their iPhone, which isn't very discreet or practical.
Still, a few more dpi in the iPhone's Touch ID fingerprint sensor wouldn't go amiss. You can never be too secure!