Valve has encountered a significant security concern surrounding the new Steam Controller. The issue doesn’t directly impact the controller itself, but rather the Steam Controller Puck, a small accessory that serves a dual purpose: it functions as a 2.4 GHz wireless receiver and a magnetic charging base. The controversy arose from a Reddit post where a user highlighted that the Puck’s exposed contacts can cause a short circuit if they come into contact with a metallic object.
The specific incident was detailed by user Toikka on the Steam Controller subreddit. According to the user, they were charging their Pixel Watch 3 near the Puck when the watch’s metal strap touched the accessory’s exposed contacts “at the exact angle.” The result was a short circuit: the strap began to heat up and emit sparks, leaving visible marks on both the Puck and the strap. The user stated they acted quickly to separate the devices, preventing a fire or functional damage, but described it as a situation that nearly led to a fire.
Valve Has Contacted the User and Is Investigating the Puck’s Security Issue
Steam’s hardware team has reached out to the user, is investigating the incident, and will send a replacement Puck. The user will also send the affected items to Valve for analysis and potential reproduction of the fault. Currently, there has been no broader public statement from Valve or a product recall, so this situation is being treated as an ongoing investigation based on a user-reported case.
From a technical standpoint, the problem appears to stem from a combination of three factors: easily exposed charging pins, a magnetic surface, and the proximity of any metallic object to this accessory. If a metal object bridges the Puck’s electrical contacts, it can close the circuit and cause overheating. This doesn’t necessarily mean the Puck will spontaneously combust, but it raises valid concerns about whether the design incorporates sufficient protection against accidental short circuits or if it relies too heavily on the user keeping the accessory away from any metal.
Valve Mentions This Possibility in the Manual, Though Not Prominently
Valve did warn of this risk in the safety documentation. The manual states that the wireless adapter, charging Puck, and controller contain magnets. Consequently, it warns that magnetic parts can attract metallic objects, posing a risk of sparks, material damage, or injury if metal is present when connecting the device. The issue is that this warning is buried within the safety documentation, not necessarily in a highly visible location for daily use. This means many users might leave the Puck connected permanently near keys, watches, phones, metal bracelets, or MagSafe accessories.
It is clear that this is an isolated incident, but it serves as a cautionary tale. We now need to wait to see Valve’s conclusion. Whether the problem can be fixed via firmware will depend on the power control design of the Puck. If the fault is purely physical, a more robust solution would involve redesigning the casing, adding protection around the contacts, or revising the current limiting circuit. Time will tell if Valve implements a solution to mitigate the issue. However, with live electrical power pins and magnets present, users must be mindful of always keeping the Steam Controller Puck away from any other metallic accessories or objects to prevent short circuits.
