It could speak also to the device or the type of equipment that's been used.
Once again, this becomes part of linking or creating that chain of evidence that will eventually lead, potentially, to a conviction. For example, if this were a type of device that we'd seen before that had been used, a very particular type of device or something like that, that would provide context to the device being used.
Annex B would be the offence that we're trying to prove the commission of, or the offence that we're trying to collect evidence in relation to, so we would list that for the judge or justice. Then C would be our narrative as to how we know what we know, why we are asking for what we're asking for and how that will contribute to the investigation of the offence.