技术规范的这一部分将ID标签的表示形式定义为印在小字母正面的Postal-4i符号4状态条形码。 Postal-4i符号系统4状态编码是本技术规范支持的唯一编码规范），用于打印项目前面的ID标签。 注意CEN/TS 15844-2和CEN/TS 15844-3涵盖以小写字母（不是平面）背面打印的荧光BNB条形码形式

This part of the Technical Specification defines the representation of ID-tags as a Postal-4i symbology 4-state bar code printed on the front side of small letters. Postal-4i symbology 4-state encoding is the only encoding specification supported by this Technical Specification ) for the printing of ID-tags on the front of items. NOTE Representation in the form of fluorescent BNB bar codes printed on the reverse side of small letters (not flats) is covered in CEN/TS 15844-2 and CEN/TS 15844-3.