FIRST AIRED: March 2, 2017

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>> One of the more eye catching technologies on display at Mobile World Congress is smartphone iris scanner works by examining 240 unique features of a human eye.>> Just imagine how your eye reacts to light so your pupil opens and closes, and your eye glazes over. You have specularities, you have water on your eyes, you have blood vessels in your eyes.
So, there's many, many signals that allow us to get that sense that we have a real person there.>> A photo of an eye gets rejected and its owner must be living and breathing. Iris scanners are considered more secure than fingerprint sensors and both Apple and Samsung have hinted their next flagship devices will include them.
The firm behind this technology says it's safe enough for banking, but to get the full phone experience, due consumers need to close their eyes to security risks, location trackers, public wi-fi, and bluetooth connections can come into cost.>> When you're on those access points, if they're open, that means that they're open for everybody.
It's not only you to do your business, but for everybody else who wants to join that access point and listen in.>> Equipment to do that could be legally bought online. It can show who is where and when and what they're doing.>> So I've got some of the device IDs, I've got their location in space where they were at the time and so now I can start making a bit of a picture of who some of these people are, what devices they're carrying and where they are moving.
>> Targeted advertising works in the same way, but the message here is for users to beware. Others could be targeting you too.