| Clue | Source | Date |
|---|---|---|
| Means of communication with Commissioner Gordon | New York Times | 12 Aug 2022 |
| Emergency device in DC | New York Times | 16 Jul 2022 |
| Private cell, in corporate lingo | Newsday | 02 Aug 2019 |
| Gotham City hotline | New York Times | 16 Oct 2018 |
| Gotham City hotline | ||
| Wayne Manor ringer | LA Times Daily | 04 Oct 2015 |
| Line in Gotham | New York Times | 12 Apr 2015 |
| Wayne Manor ringer | ||
| Line in Gotham | ||
| Superhero access method | ||
| TV hotline | ||
| *One way to reach a superhero | ||
| *One way to reach a superhero | ||
| Item in Commissioner Gordon's office |