17 cool gadgets that tease the future

How long has that block of cheese been in your fridge? You could eat it and find out, or you could try some of these trackers that work with Alexa.

Chicago-based startup Ovie Smarterware is developing food tracking tech. After you tell Amazon's voice assistant technology what you're putting in your fridge, it'll track how many days it can stay fresh.

But you'll need to strap a little tracker to the food item, and it will turn colors when the cheddar is no longer ideal for eating. Cost: $59 for a set of three.