1. If you are engaged in an activity that requires a license such as driving a car, hunting, carrying a firearm, etc., then you must provide your license if asked. LE does not need probable cause for anything.
2. If you are not doing anything that requires a license and you have not been arrested, you do not have to provide ID to LE. Exception: Texas Education Code states that you must ID to LE if asked, if you are on a school campus.
3. If you are arrested, you must identify yourself to LE.
4. If you lie about your identification to LE when being questioned, you can be arrested.
1. If you are engaged in such an activity, you do NOT need to engage with a police officer AT ALL to include identifying yourself. In order to detain you for questioning a police officer must have a reasonable, articulable suspicion, that you are committing, or are about to commit a crime.
Simply engaging in an activity that requires a license is not sufficient suspicion to detain you. Eg. Detaining you because you are walking down the sidewalk openly carrying a handgun in a holster. Driving down the road obeying all traffic laws.
In any case, even a detention is not an arrest, therefore you do not need to identify yourself unless you are arrested. Arrest requires probable cause to believe that a crime is/was committed, this is a higher standard than reasonable suspicion needed for a detention.
In order to stop someone who is driving, an officer must have probable cause that a crime is being committed (speeding, improper equipment, no registration, etc.). Granted, this is easier given the myriad traffic offenses in the code.
Once stopped for a traffic offense, the person is technically under arrest until the stop is complete, so must provide ID, or face an additional class C misdemeanor.
2. If asked to ID on a school campus and you refuse, you can be ejected. However, it is not a crime.
3. If lawfully arrested you must identify yourself, or you are subject to being charged with a class C misdemeanor. If you give a false or fictitious name, Class B.
4. If you give a false or fictitious name:
WHEN
(1) lawfully arrested the person;
(2) lawfully detained the person; or
(3) requested the information from a person that the peace officer has good cause to believe is a witness to a criminal offense.
you commit a Class B misdemeanor. Otherwise no crime is committed.