"Coruscant is one big city. When a blaster misses its target, it hits something else. The less weapons are fired, the less chance some innocent bystander will be injured."
―Mace Windu[src]

A weapon permit was an authorization used in Coruscant in 33 BBY. It was given to members of security forces, allowing them the right to carry a blaster weapon or other kind of weapons — although indiscriminate use of weapons were still prosecuted even if the shooter had a permit.

Apparently, members of ambassadorial delegations did not need this permit; neither did members of the Jedi Order to carry lightsabers.