Local television stations have also begun to utilize codes on local newscasts to allow viewers quicker access to stories or information involving the pandemic, including testing and immunization scheduling websites, or for links within stories mentioned in the newscasts overall.
In larger symbols, this is complicated by the presence of the alignment patterns and the use of multiple interleaved error-correction blocks.
This can allow storage of an entire message in the barcode, rather than just storing partial data with a reference to a full message somewhere else such as a link to a website , thus eliminating the need for additional always-available infrastructure beyond the printed barcode itself.