Various embodiments of the present invention are directed to a dispenser configured for storing one or more items and dispensing the stored items to authorized users. According to various embodiments, the dispenser generally includes a housing defining an interior portion dimensioned to receive a plurality of items and an access assembly configured to prevent unauthorized user access to the interior portion of the dispenser while providing selective access to certain items in response to input received from an authorized user. According to various embodiments, the access assembly comprises a pair of flexible barriers coupled to a sliding door assembly, which includes one or more lockable access doors. Together, the door assembly and flexible barriers prevent access to the interior of the dispenser when in a locked configuration and permit access to certain items when in an unlocked configuration.