If you're seriously thinking about buying a Pokemon Go Plus, there are few other explanations.
It's a $35, £35 or AU$50 wearable pin that quietly alerts you to nearby Pokemon -- that way, you don't need to pull out your phone to play the uber-popular Pokemon Go game.
Like with the slot machine at a Vegas casino, all you're doing is repeatedly pushing that single button to capture Pokemon, collect items and advance in the game. Push, push, push.
Thing is, if you're a Pokemon Go addict, you like it that way.
Pokemon Go is not what it seems. While it might look like a cute pet simulator at first blush, you can't meaningfully advance in the game without harvesting every creature in your path. And the game is programmed specifically not to let you do that unless your phone is on, GPS is active, screen is on, locked to the game at all times. (You can't even answer an email without losing progress.)
It's easy to spot a Pokemon Go addict: They're the zombies with heads buried in phones with Pokemon Go always visible on the screen. Or telling other addicts how their phone's fully charged battery died at 2 p.m. because they couldn't stop playing.
The Pokemon Go Plus lets you pay to fix this broken state of affairs.
Updated October 21.
With those steps out of the way, you should now be able to play most of Pokemon Go just by pressing that button, whenever it lights up. You can leave your phone in your pocket, purse or backpack without fear -- or even use it for other things while you play.
There's a slight learning curve to understanding what the pin's light and vibrations are trying to tell you, but you'll pick it up pretty fast. Plus, here's a cheat sheet:
|When?||Color?||Vibration?||What it means|
|Anytime||Green||Buzz x6||A wild Pokemon appears!|
|false||Blue||Blip blip x6||PokeStop nearby!|
|false||Yellow||Unknown*||There's a Pokemon you haven't caught|
|false||Red||Blip blip blip x3||Phone out of range|
|false||Red||Buzz x1||No internet connection|
|After pressing Green||White||Buzz x3||You're about to catch a Pokemon...|
|false||Red||Buzz x1||Your Pokemon storage is full|
|false||Red||Blip x3||You're out of Pokeballs|
|After Green and White||Rainbow||Buzz x5||You caught the Pokemon!|
|false||Red||Blip x3||The Pokemon ran away|
|After pressing Blue||Rainbow||Blip x3||You got items from the PokeStop!|
|false||Red||Buzz x1||PokeStop is out of range|
|false||White||Buzz x1||Your item bag is full|
|After pressing with no light||No light||Blip x1||Pokemon Go Plus connected|
|false||Blue blink||No vibration||Pokemon Go Plus disconnected|
|false||White blink||No vibration||Pokemon Go Plus ready to pair|
|false||No light||No vibration||Replace battery|
*We're not sure which vibration pattern goes with this one.
It does the job pretty well! Until it doesn't.
You might reasonably assume that once you pair the Pokemon Go Plus with your phone, you're set. You might assume you'll just attach this Pokemon-tracking wearable to your body and never miss a Pokemon or PokeStop again.
You'd be wrong. While most Bluetooth devices stay connected when you pair them, and automatically reconnect whenever they're in range, the Pokemon Go Plus doesn't.
I've gone hours without realizing the device had shut itself off, and I've had to manually pair it again more than a dozen times a day. It'll shut off even if you've been tapping the button religiously every time it buzzes. (It'll also shut off instantly if you try to capture a Pokemon with your phone instead of pressing the button.)
Nintendo and Pokemon Go developer Niantic never replied to emails about the issue, though a Nintendo technical support rep told me that "There are known Bluetooth stability issues with the Samsung S7 under the latest Android OS," and gave me a page full of non-user-friendly steps I could try while the company works on a patch.
Update, October 21: Plus, the battery life isn't as good as we'd hoped. The Plus lasted us 32 days on its replaceable button battery, not 100. Good thing replacement CR2032 cells are cheap online.
Update, October 21: Niantic has patched the game so that you can choose to ignore either Pokemon or PokeStops when using the Pokemon Go Plus. That might help save battery life, as well as avoid a couple of the above issues.
Personally, I stopped playing Pokemon Go weeks ago, and the pin doesn't make the game feel fresh enough to meaningfully tempt me back. Even if I could keep it paired.
But if you're an unrepentant Pokemon Go addict...go for it. Time is money, and the amount of time you'll save with the Pokemon Go Plus has got to be worth $35. Plus, you'll have a greatly-reduced chance of running someone over with a motor vehicle.
Just remember that Pokemon Go is coming to smartwatches starting later this year.