Some states have a formal process to establish that a person is a member of a gang, called validation. Once a person is validated as a gang member, the person is subject to increased sentences, harsher punishments (such as solitary confinement) and more restrictive parole rules. To validate a person as a gang member, the officials generally must provide evidence of several factors, such as tattoos, photographs, admissions, clothing, etc. The legal requirements for validating a person are much lower than the requirements for convicting of a crime.