Kensington Proximo Bluetooth Tracker and Alarm Tag for iPhone 5/4S, K39567US

First started using these Proximo trackers in 2013 to help me (1) locate lost keys and (2) give me some indication whether a set of keys was in my proximity. In the first case - I've located lost keys a handful of times using Proximo. In every instance it's been a lifesaver. In the second instance, I can - for example - be on the road out to pick up my motorcycle trailer and, with a glance at the App, I can rest assured that I have the key to the storage unit somewhere in the car (if I'm on the freeway and the App says there's a signal to the storage unit key, it's with me - versus me pulling over and having to physically locate and eye-ball the key to ensure the trip won't be fruitless). For the foregoing, you have to keep up with the devices, check in occasionally to ensure batteries aren't low, and keep a bunch of 2032 spare batteries handy to replace low batteries. In exchange for that nominal effort, you get peace of mind. Forget about using the "proximity" alarm feature, it's too buggy and you'll ultimately be unsatisfied and might even write a bad review here (plenty of those). However, to locate a lost key or to determine whether a set of keys is within 20 feet of you, then these devices and the corresponding iPhone App are lifesavers!! Just finished changing out some low batteries and realized that I was now tracking 12 devices (motorcycle keys etc), thought I'd log in here and give my positive feedback to help people looking for solutions to the issues raised here. I've tried many competing devices, even in the last 6 months when I thought the devices weren't working with my upgraded iPhone 6 Plus (I was wrong), and have found nothing that can compete with these trackers.

see other review for main unit:I am a fully functional tech savvy sort of guy. Not a geek, just pretty good with things, and very handy. This Proximo thing is so bizarre and arcane to work with, that it is all but useless. I do not care what excuse Kensington comes up with, it is extremely hard to setup and use. Their instructions are fractured and counterintuitive. If I could send this back I do it in a minute, but it is too late. Despite the seemingly good idea (losing keys is now our family hobby) this Proximo thing is a loser. If you could get it to work, maybe it would be OK. I doubt it. Do not waste your money.

Disappointed with whole system.... Works erratically.

Instructions for use not very clear. So far have not received one alarm when I forget my phone! If I can get it to work, it will be a good buy!

The line "Proximo Starter Kit includes a key FOB and a Tag" seems to be a copy paste error. This item is not the starter kit and has the tag only.The tag works as expected.

Got it because I always loose my keys. Love it! Can't live without it. Very easy to program. Never fails. Tells you where the key was last seen, so you know if it is in the house at all (or left at a friend's house).

Look, I hated this product because it was not clear at the time I bought it that I needed to purchase an additional product to use it. And the back cover (holds in the battery) was missing. A poor product explanation and missing parts makes for a really bad experience. I'll use something from another maker.

Perhaps its me but I get this work and than it stops - I have a couple of tags andwhen I get it work it's only one tag. Again I don't claim to be the brighest blub butI just gave up.