Companies that sell biotechnology reagents are to adopt a new screening tool that attempts to avoid DNA getting into the hands of terrorists.
I work with synthetic DNA every single day and I can't comprehend how on earth synthetic DNA purchased by terrorists can be a significant threat.
Using synthetic DNA one can amplify genes, let's say the gene for certain toxin from a pathogen. But from the amplified gene to the final product (the toxin, for example) there is a long, technically complex and painful path. In addition machines that can synthesize DNA are not that expensive.