In case someone reads this and doesn't know what First Tech Challenge (FTC) is: FTC is one of the robotics competitions of FIRST. Since PTC is a Strategic Partner of FIRST, we've looked into using Vuforia in next year's competition!
They've announced that the beacons from last season will be on the field again this season. We don't know anything about next year's game, but it's likely the robots will need to find the beacon in autonomous. Vuforia could be really useful to locate the beacon.
A problem came up when we tried to scan the beacon into Vuforia.
We printed a large paper (24" x 24") for scanning, placed the beacon on it, and tried to scan it. There were not enough feature points for it to get an accurate representation of the beacon's size and shape. I can send you a picture of the results if it would help.
It's not the paper. I scanned a remote controlled car, about the same size as the beacon, on the large paper and it scanned fine. We think it's because it is plain white plastic with no features. I did try turning it on so that it is lit with red and blue lights, but that didn't make a significant difference.
While there may not be much that can be done to fix this, we thought it was worth pointing this out to Vuforia/PTC.
Here's an image of what we're trying to track (ignore the basket):
FTC Team #3491