Would you comply with wearing a tracking device on your person per the request of your employer?

Today the administration at my place of employment informed us of a new national pilot program our building was selected to participate in. The program entails that all employees are to wear a tracking device so as to provide real time data as to how many man hours are being spent in each operation. No literature or documentation covering the legality of the program was provided. There was no power point presentation elaborating on any detail. No website we could be referred to for more information. When raising the question as to whether or not employees are contractually obligated to participate, I was met with hostility and abruptly "assured" that all bases are covered. The point was made that non-compliance would absolutely result in disciplinary action being taken. What are your thoughts?