Securing a security tag into an article

A security tag, comprising:

• an elongated substrate;
• an antenna mounted on the elongated substrate;
• a radio frequency identification (RFID) circuit mounted to the antenna;
• wherein an end of the security tag is configured to be positioned into a first opening to an interface space between two layers of an article of clothing fixedly connected by one or more opposing connectors that are spaced apart in a manner to form the interface space sized to receive the security tag;
• and
• wherein the security tag is a flexible security tag and is configured to be pulled through the first opening and at least partially into the interface space.

A method for securing a security tag into an article of clothing, comprising:

• positioning an end of the security tag into a first opening to an interface space between two layers of the article of clothing, the two layers being fixedly connected by one or more opposing connectors that form an existing stitching of the article of clothing, the security tag including a flexible elongated substrate on which electronic components of the security tag are disposed, the flexible elongated substrate having a thickness between 0.0004 inches and 0.008 inches and having a width between 0.1 inches and 0.2 inches;
• and
• pulling the security tag through the first opening and at least partially into the interface space, wherein the thickness and the width of the flexible elongated substrate cause the security tag to be flexible, bendable, stretchable, or otherwise configured and/or constructed to:
• allow for the pulling, sustain deformations caused by the pulling, and maintain operation of the electronic components despite the deformations caused by the pulling.