Latest in A7

Image credit:

Apple explains how the iPhone's fingerprint sensor keeps your info secure

Jon Fingas, @jonfingas
February 27, 2014
Share
Tweet
Share

Sponsored Links

If you've ever wanted to know how the iPhone 5s' Touch ID fingerprint security works beyond a basic overview, you'll be glad to hear Apple has just delivered a motherlode of new details. An updated version of its iOS Security white paper (PDF) explains much of what happens to your finger data after you touch the sensor. In short, your information may be more hack-resistant than it seems at first glance. Each A7 chip has a unique secure space that neither the A7 nor Apple can read, and every authentication session is encrypted end-to-end. The company is also offering a deeper explanation of what it does with your fingerprint image, noting that the print only lasts in memory until it's turned into a decryption key. As we've known for a while, there are safeguards that wipe out that key after 48 hours of inactivity, a reboot or five failed login attempts. While the new insights will only have so much usefulness when developers can't use Touch ID for their own apps, they suggest that there's little to no chance of fingerprint theft or a large-scale data breach.

All products recommended by Engadget are selected by our editorial team, independent of our parent company. Some of our stories include affiliate links. If you buy something through one of these links, we may earn an affiliate commission.
Comment
Comments
Share
Tweet
Share

Popular on Engadget

Engadget's 2020 Back-to-School Guide

Engadget's 2020 Back-to-School Guide

View
The Morning After: Google's $350 Pixel 4a is the best midrange phone you can buy

The Morning After: Google's $350 Pixel 4a is the best midrange phone you can buy

View
A $13,000 electric car will go on sale in the US by late 2020

A $13,000 electric car will go on sale in the US by late 2020

View
'Avengers: Endgame' directors will make Netflix's most expensive film yet

'Avengers: Endgame' directors will make Netflix's most expensive film yet

View
China won't accept 'theft' of TikTok, according to state newspaper

China won't accept 'theft' of TikTok, according to state newspaper

View

From around the web

Page 1Page 1ear iconeye iconFill 23text filevr