Pursuant to G.L. c. 90 § 24T, it is a felony to interfere with or tamper with a certified ignition interlock device with the intent to disable the device. Tampering with an IID carries a penalty of incarceration in state prison for up to five years and a minimum sentence of 6 months in a house of correction.

The Registry of Motor Vehicles defines tampering as an intentional attempt to physically disable or otherwise disconnect the Ignition Interlock Device from its power source so as to allow a person to start the engine or continue to operate a motor vehicle without passing a breath test.

If the Massachusetts Registry of Motor Vehicles determines, after a hearing, that a person tampered with an ignition interlock device, he or she will have his or her driver’s license revoked for 10 years. This 10-year revocation will be imposed whether or not the IID user was criminally charged or convicted.

Ignition interlock service providers use tamper-resistant seals and other means such a visual examinations and inspections to detect tampering. Service providers are supposed to check for any signs of tampering when they perform the monthly calibrations and downloads. Ignition Interlock Devices approved for use in Massachusetts must be tamper-resistant and show evidence of tampering if it is attempted.