17 cool gadgets that tease the future

Allergy Amulet is a portable device that can detect food allergens or certain ingredients. It also doubles as a cute piece of jewelery when hung on a necklace.

To use the device, you'll need to insert a disposable test trip into any suspicious food and pop it in the reader. After a few seconds, the reader will turn red or green to tell you if the food contains the target allergen or ingredient. It can test for milk, soy, dairy, shellfish, finned fish, wheat, eggs and nuts.

Each strip costs $1 to $3 and the reader will cost between $100 to $250. Pre-sales begin this fall and the device will be available in 2019.

Another startup called Nima also showed off pocket-sized devices that test a food sample for the presence of peanut proteins or gluten.Nima's sensors take about three minutes to test the sample, but the results can be quicker if there is more of an allergen present.

The Nima Gluten Sensor is available now for $289, while the Nima Peanut Sensor is available for pre-order at a discount of $229.