"Or other reliable electronic means."
“Telephone.... other other reliable electronic means.”
Parentheses should be used when the words inside the marks are not a requirement for the sentence to make grammatical sense. In other words, you could completely remove the parenthetical statement and everything would still read OK (if a little less colorful or informative).
See: https://www.wordgenius.com/grammar-rules-to-keep-in-mind-when-using-parentheses/ZTaUrbZIQQAGqcTf
Judge we want to search Trumps estate and possibly kill him and his secret service team or anyone else gets in our way. FBI Agent
Sure fine by me. Should I ask what for? Judge
No we got this. FBI Agent