You might’ve heard of this one. It’s an Apple app that takes advantage of the gyroscopic sensors in an iPhone or iPad to measure some parameters of your putting stroke. The app is free. There’s a cradle you can buy that attaches to your putter shaft but duct tape works pretty well.
Basically, load the app, tape your phone to the shaft, and take a couple of 10 foot ish putts. You’ll hear a ding after each stroke. Afterwards, you’ll get a bunch of stats about your face angle, closure rate, tempo, etc…all of which would be useful for Ping to build you a putter. For the low, low price of $1200. Scotty Cameron thinks that’s excessive… Though i understand the wait is several months so maybe it’s not excessive enough?
You can store practice sessions though, and use the app as a trainer, to try and get your stroke more consistent. You can take the stats and narrow down the universe of putters to see what might better fit you.
Anyway, I thought it was cool, and surprisingly easy to mess around with.