I did it at the police headquarters opposite Northeastern University. Sadly, it was rejected by the FBI. My suggestion is to take additional fingerprint cards from the FBI office near Govt Center and call the vendors approved by FBI to take your fingerprints. They are more expensive and hopefully more reliable. Otherwise, try different police stations (I think the Harvard public safety has this service but not sure if they do it for everyone else) and asked if they offered this service. I had my second fingerprints taken in Singapore. I am praying that this goes through because I have 30 days turnaround for MR, PCC and RFPR. Good luck!