It may be BS...but it wouldn't surprise me if true. I bought a Yakima lock system for my bike rack and when I wanted to have all the locks keyed the same...I learned, as did my LBS, that every Yakima lock in the shop was already keyed the same. I tried my key in a friends lock, and, you guessed it, it unlocked his as well. I have since gotten rid of my Yakima stuff. I'm getting rid of all my Master locks as well after reading this thread and watching some vids on YouTube.

This thread has been a real eye opener.

Thanks
Mikey