Snail mail
So if they want to know who communicates with who(m) ... where is the provision for all snail mail, parcels, courier services etc to log and report who posted every single item of mail/parcel and where it went to? No more first class mail - everything must go recorded delivery and be stamped and tracked by/at the post office.
Ms Smith's fear of technology being used by terrorists, apparently DOES know some bounds.