It can be hard to keep track of every diaper bag and travel mat. These smart tags attach to whatever bags, briefcases, or gear you need to tote, while the smaller tags – called “taglets” – can be affixed to everything inside. When everything is accounted for, the main tag will flash a green “all good” indicator. If something’s missing, you’ll see a red light, and your smartphone will tell you what’s gone rogue. The starter kit features three smart tags and three taglets, with upgraded sets containing more of each, so you can even stick one on your kid for good measure.