I think claiming the mileage in your case is a bit of a judgment call. After researching, I did not find any guidance that was definite either way. The situation is more clear cut if you purchased the item for your self-employment business instead of the business where you are an employee. Did your employer reimburse you for the cost of the device? If not, it could be considered an unreimbursed employee expense. I suggest that you consider entering the mileage into your return, see if it makes a difference and then make a decision about whether to claim it. As I mentioned before, if you are not already itemizing deductions, you probably won’t see a change in your return. I will edit my original answer to include guidance about where to enter the unreimbursed employee expenses.
