Except for the part where they don't have to pay a shift manager and the lunch rush never ends.

There are qualitative and quantitative differences between requiring weekly progress meetings, daily updates, and microchipping employees.

But not between a manager on the floor, looking you in the eye, and a bracelet doing the same.

A manager can't follow each individual employee every moment of the day.

To be a little more abstract, I'm talking about the degree of privacy and autonomy that workers are afforded. The reason people find the idea of wristband tracking objectionable is because it provides a means to reduce the autonomy of large numbers of workers beyond what was previously feasible.