Kan. Stat. Ann. § 8-1463
"Security interest" means an interest in a vehicle reserved or created by agreement and which secures payment or performance of an obligation. The term includes the interest of a lessor under a lease intended as security. A security interest is "perfected" when it is valid against third parties generally, subject only to specific statutory exceptions.
L. 1974, ch. 33, § 8-1463; July 1.