Summons to produce documents and electronic evidence permits compelled production at specified place, subject to evidentiary and postal exclusions. A court or police officer may summon any person to attend and produce documents, electronic communications or other things believed necessary for proceedings under the Sanhita, or the person may comply by causing production without personal attendance; the provision covers communication devices likely to contain electronic evidence and preserves existing evidentiary safeguards and exclusions and does not apply to items in postal custody.