"A videotape with "Happy Birthday" written on the label."
— Inventory description
"Happy Birthday" (ビデオテープ「バースデイ」 bideotēpu `bāsudei' ) is an item in Resident Evil 7: Biohazard.
The tape isn't mandatory per se; it shows first time players the solution to the padlock to allow them to escape Lucas' birthday trap in the Testing Area.
The tape is located a dresser in the Main House Attic.