1. Magnetic Label: It is a kind of anti-theft label which is made of ferromagnetic material. Its features are that it can be easily detected by security gates or handheld detectors and can be easily removed with a de-magnetizer.

2. Radio Frequency Label: It is a kind of anti-theft label which is made of radio frequency material. Its features are that it can be detected by radio frequency detectors and can be easily removed with a radio frequency deactivator.

3. Acoustic Label: It is a kind of anti-theft label which is made of acoustic material. Its features are that it can be detected by acoustic detectors and can be easily removed with an acoustic deactivator.

De-magnetization Method: To de-magnetize a magnetic label, use a de-magnetizer. This device emits a strong magnetic field which will deactivate the label.

Radio Frequency Deactivation Method: To deactivate a radio frequency label, use a radio frequency deactivator. This device emits a radio frequency signal which will deactivate the label.

Acoustic Deactivation Method: To deactivate an acoustic label, use an acoustic deactivator. This device emits an acoustic signal which will deactivate the label.