Calling the emergency services is a deliberately easy process -- just three digits in most countries, simple enough for a child to learn. But Apple may have plans to make it even more straightforward, after patenting a new way of calling for help using just your fingertips. The patent describes how the user could program different fingerprints, patterns and even the amount of force required to switch the phone into 'panic mode'. This would result in the phone calling the emergency services, and could activate a live-stream of video, or provide location data via GPS. Personal safety smart jewelry -- already on the market -- works in a similar way.