Mass. Gen. Laws ch. 131 § 35
The provisions of section thirty-four, except as hereinafter provided, shall not apply to any holder of a sporting, hunting, fishing or trapping license who violates section twelve in that he fails to carry such license on his person and wear it in a visible manner on his outer clothing while fishing, hunting or trapping; provided, that he furnishes definite proof to the person demanding production of his license for inspection, as authorized in section thirty-two, that he is the holder of a valid license. In the event that the holder of such license fails to carry it on his person and wear it in a visible manner, he shall for his first offence be reported to the director of law enforcement; upon his second such offence, his license shall be surrendered and shall be suspended for a period of thirty days from the date of the notice of his second offence, after which it will be returned to him by said director; and upon a subsequent offence his license shall be subject to the provisions of section thirty-four. A person shall surrender such license on demand of any officer empowered to enforce this chapter.
The provisions of this section which relate to the wearing of a license shall be in effect until such time as the division of fisheries and wildlife has instituted an automated licensing system for hunting, fishing, sporting and trapping licenses.
Mass. Gen. Laws ch. 131, § 35