TV program playing method, remote control and TV

A TV program playing method applied to a remote control which is provided with an optical sensor, wherein the method comprises:

• obtaining, by the remote control, a first unlock instruction triggered by a first user when a TV system is in a standby state;
• obtaining, by the remote control, a first heart rate feature information of the first user according to the first unlock instruction via the optical sensor;
• displaying, by the remote control, the first heart rate feature information of the first user;
• when a difference between the first heart rate feature information and a second heart rate feature information in a feature library is less than a threshold:
• sending, by the remote control, a first playing instruction carrying an identifier of the first user to the TV, so that the TV plays a program in a program list corresponding to the identifier of the first user, wherein the feature library pre-stores corresponding relationship between identifiers of a plurality of users and heart rate feature information of the plurality of users;
• lightening, by the remote control, an indicator light of a first key corresponding to the first user;
• and
• sending, by the remote control, the first playing instruction to the TV when the first user triggers the first key;
• authenticating, by the remote control, the first user when the difference between the first heart rate feature information and each of a pre-stored heart rate feature information in the feature library are all larger than the threshold;
• obtaining, by the remote control, the first heart rate feature information of the first user via the optical sensor;
• and
• storing the first heart rate feature information of the first user and the identifier of the first user in the feature library when the first user is authenticated.