Many HDTVs (LG Pro:Centric or Samsung Hospitality) are locked with a "Clone Code." The for these is 123456 or 7890 . Entering this in the service menu (press Mute + 1 + 8 + 2 + Power) can switch the TV from "Hospitality Mode" to "Retail Mode," unlocking full features.
Most modern smart TVs use activation codes to link your television to your streaming accounts (like Netflix, YouTube, or Prime Video) without requiring you to type in passwords using a clunky remote control. hdtv activation code top