Some transgender people use assisted reproduction technology services and preservation of reproductive tissue prior to having surgery that would render them infertile. Depending on what type of gametes the person's body naturally produces, this would include cryopreservation of semen in a sperm bank or preservation of oocytes or ovum. For such individuals, access to surrogacy and in vitro fertilization services is necessary to have children. Some people advocate specifically for transgender people to have a legal right to these services. Identity documents Identity documents are a major area of legal concern for transgender people. Different procedures and requirements for legal name changes and gender marker changes on birth certificates, drivers licenses, social security identification and passports exist and can be inconsistent. Many states have historically required sex reassignment surgery to change their name and gender marker; however, there are increasingly few states where this is the case, with Alabama being one of the last. Also, documents which do not match each other can present difficulties in conducting personal affairs—particularly those which require multiple, matching forms of identification. Furthermore, having documents which do not match a person's gender presentation has been reported to lead to harassment and discrimination. Name change Transgender people often seek legal recognition for a name change during a gender transition. Laws regarding name changes vary state-by-state. In some states, transgender people can change their name, provided that the change does not perpetrate fraud or enable criminal intent. In other states, the process requires a court order or statute and can be more difficult. An applicant may be required to post legal notices in newspapers to announce the name change—rules that have been criticized on grounds of privacy rights and potentially endangering transgender people to targeted hate crimes. Some courts require medical or psychiatric documentation to justify a name change, despite having no similar requirement for individuals changing names for reasons other than gender transitioning. Birth certificates U.S. states make their own laws about birth certificates, and state courts have issued varied rulings about transgender people. Most states permit the name and sex to be changed on a birth certificate, either by amending the existing birth certificate or by issuing a new one, although some require medical proof of sex reassignment surgery to do so. These include: Texas, by opinion of the local clerk's office, will make a court-ordered change of sex. New York State and New York