Once more, from the top....
When doing the vast majority of video shops, eye glasses cams are not acceptable. For new homes, senior living, assisted living, apartments and new car shops you must be able to keep the subject in the frame when you turn your head to look at other things, like a map or a lot or a nice view. You cannot do that with the glasses cam.
Second, head movement makes the video from the glasses cam "jerky" enough so that viewers often experience vertigo watching more than a few minutes of it. So, it is best suited to short interactions where the shirt button camera mount does not best capture the subject. This would include where the cam has to "see" over a high counter (e.g. rental car counter), see into a booth from a shopper seated in a car (e.g., drive-up bank or fast food), or where it is essential that the camera be able to see anywhere that the shopper can see (where the cash goes when paying for parking, whether the cashier entered the transaction, etc.). In the last instance, "leaning in to aim the button camera at the valet's pants pocket just isn't going to be very subtle!
Also, note that those suited best to the eye glasses cam are very short interactions. Moreover, they often deal with cash integrity, so having the subject's hands out of the picture frame is to be avoided if physically possible.
Finally, once you have button cam experience, you will readily be accepted for shops where the eye glasses cam will work best. That seems to be a function of the fact that button cam shops tend to be used in industries where fairly long shops, requiring complex scenarios are the norm. If you can do the complex scenarios while "filming" it is assumed that you will find the sometimes complex cash integrity shops easy to master.
Complex cash integrity shops with eye glasses cam? If you are an experienced video shopper (button cam) and live or work in or near DC, Baltimore, Tampa, Chicago or Detroit, please PM me. I may have some work for you!!! You do not need to own eye glasses cam to start. These are ongoing projects.
Full disclosure: I am an independent contractor. As such, in addition to shopping, I have provided shopper recruitment services to a limited number of boutique MSCs since 2013.
Based in MD, near DC
Shopping from the Carolinas to New York
Have video cam; will travel
Poor customer service? Don't get mad; get video.