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New Touch ID rules: Why you have to enter your passcode when you wake up

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Monte Martin
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If you haven t used your passcode to unlock your iPhone or iPad for six days, an iOS 9 restriction disables Touch ID if you don't unlock with a fingerprint within eight hours.

However, it might have some bearing when a court order is issued to compel someone to use a fingerprint to unlock an iOS device, as in a recent case.

Macworld was alerted to this change when reader David Shanahan emailed the Mac 911 help column about being prompted for his passcode on both an iPad Air 2 and an iPhone 6 once or twice a week in the morning after leaving them charging overnight.

Researcher Jonathan Zdziarski also confirmed that he hadn t seen this requirement before, and said, It explains what the hell s been going on with my phone, though!

I would love it to automatically kill the fingerprint altogether or set the expiration down to even 4 hours or 8 hours if I m not inside some geofence I ve set up, he said.

Because a law-enforcement or other government agent or a malicious party wouldn t necessarily know the last time the passcode was entered, it raises the stakes higher than the 48-hour timeout.

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Monte Martin
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