Sequential Coded Wire Tags (sCWT) were
introduced about 30 years ago, at that time in
binary coding, but nowadays with decimal
coding. These allow identification of small
batches of tags cut from the same spool, and
even individual identification. Although for
many large-scale projects the standard coding
system, where all tags cut from a spool are
identical, is all that is required, the sCWT made
a wide range of smaller scale projects viable.