DroidCam.Client.Setup.exe (80MB)
Go to droidcam.app/windows on your computer to download and install the client!
Next >
Make sure your phone is on the same network as your computer, and the DroidCam app is open and ready.
Click [Refresh Device List] to search for devices.
After 3 attempts, you will be presented with the option to add a device manually.
If auto-discovery is failing:
ensure the app has Network permissions granted,
ensure multicast is allowed on your network,
try toggling WiFi Off/On or restarting your system.
Next >
Even years after release, the "2-7-5 3-2-5" puzzle remains controversial. Some players argue that the solution is random each playthrough (it is not—it is hardcoded). Others claim you can bypass the puzzle entirely by using the Remote Electrical Charge on the tower’s base to short-circuit it. That method works but locks you out of the Achievement.
Data-miners have confirmed that the puzzle originally had a third layer: "4-1-9 6-6-2", but it was cut from the final game due to difficulty complaints during playtesting. References to this removed sequence still exist in the game’s subtitle files.
If you have tried to "decode broadcast 2-7-5 3-2-5" and failed, here is what you likely did wrong:
The true destination is the intersection of a line drawn from 2-7-5 to 3-2-5. In practice, this midpoint is located exactly beneath the Solomon Wayne Courthouse, in a flooded sewer junction that is not marked on the standard map.
To decode the broadcast manually (without cheating): batman arkham city decode broadcast 2-7-5 3-2-5
Once you stand on the exact tiles beneath the Courthouse (look for a broken Gotham City street sign half-submerged in murky water), the number broadcast changes. The voice says:
"Access granted. Calibration complete."
The inclusion of the 2-7-5 3-2-5 broadcast is a masterclass in environmental storytelling. It reinforces three key themes of the game:
Fans have debated whether the numbers reference a real-life event. Some speculate that 275 and 325 are the old police band frequencies for Gotham’s 7th and 12th precincts. Others believe it is a nod to the comic Batman #275 and Detective Comics #325. Rocksteady has never officially confirmed. Even years after release, the "2-7-5 3-2-5" puzzle
Before we decode the numbers, we need to pinpoint the location. You will not stumble upon this broadcast during the main story mission "Airborne" or while fighting Solomon Grundy. You need to be actively investigating the Subway area—specifically the abandoned train tunnels beneath the bowels of Arkham City.
As you navigate the flooded tunnels and dodge the occasional thug, you will hear a crackling radio transmission. It’s easy to miss if you’re in combat. The voice is distorted, mechanical, and repetitive. It utters only two short phrases:
"Broadcast... 2-7-5... 3-2-5."
It loops every 30 seconds. To the untrained ear, it is nonsense. To the seasoned detective, it is a lifeline. Once you stand on the exact tiles beneath
Most players expect a Riddler Trophy for this. They are wrong. The "2-7-5 3-2-5" broadcast does not lead to a green, question-mark-encrusted box. Instead, it unlocks a hidden audio tape that is critical to understanding Hugo Strange’s backstory.
The tape, titled "Strange's Protocol 10 Blueprint," reveals that the numbers are not random—they are the atomic mass indices of a specific nerve toxin Strange planned to release via the subway water system. The broadcast is a dead man’s switch, left by a rogue Arkham City guard who tried to leak the secret.
After listening to the tape, the game silently updates the "Enigma Conundrum" side mission. You are now one step closer to unlocking the secret entrance to the Riddler’s underground lair.