Tattoos for Guys?

Are Tatoos permissible, what about for identification?

Tatoos are not permissible in Islam for many reasons. It is a form of changing the creation of Allah, it is also an imitation of disbelievers. Men who are using tatoos as a form of beautification are imitating women which is also not permissible, others who use tatoos out of pride in a group, idea are placing themselves in a grey area where associating partners with Allah might come into place. Even if the tatoo said "La Illlah Illa Allah" it is still questionable as it is not narrated that any of the companions or the Prophet did such. If a Muslim brother wants to do a tatoo to identify himself as a Muslim, he should follow the sunnah of the Prophet and exhibit Muslim actions and manners. For purposes of identification after death, he may wear a - non Gold - ring that shows he is a Muslim.

Hinna for women is permissible for purposes of beautification, and it is not permanent like Tatoos.