BBC Click's Lara Lewington uses a smartphone app in a supermarket
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The apps which could help those with allergies

From an app which helps those with food allergies and intolerances to find food they can eat safely to a prototype device which can detect the presence of gluten in food, BBC Click's Lara Lewington looks at some of the latest allergy technology.

More at BBC.com/Click and @BBCClick

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