Property owners can use the Keybox Authorization by Tenant (TXR 1411) form to ask for a tenant’s approval to use a keybox. Keyboxes are not required by your MLS or REALTOR® association. They are a convenience for property showings but come with risks such as unauthorized entry. The Keybox Authorization by Tenant form can be used with residential, commercial, and farm & ranch properties and is one of more than 150 forms exclusively available to members of Texas REALTORS®.