Does placing car keys and mobile phones together have any impact?
2 Answers
Placing car keys and mobile phones together has no impact. The transmission principles of car remote controls and mobile phone signals are different. The remote control uses photoelectric waves, while the mobile phone uses microelectric waves, and they do not interfere with each other, nor do they share the same frequency spectrum. Car remote keys utilize modern digital encoding technology, whereas mobile phones employ a communication technology that converts sound energy into electrical energy and uses "electricity" as the medium to transmit speech. Additional information: 1. Car remote keys: Using modern digital encoding technology, the key information is encoded and transmitted via infrared diodes emitting light waves. The receiver's infrared sensor converts the received infrared signals into electrical signals, which are then processed by the processor for decoding and demodulating the corresponding commands to meet the operational requirements of controlling devices such as set-top boxes. 2. Mobile phones: Mobile phones, fully referred to as mobile telephones or wireless telephones, commonly known as cell phones, were originally just communication tools. In the early days, they were colloquially called "big brothers." They are portable telephone terminals that can be used over a wide range, initially developed from battlefield mobile telephones manufactured by Bell Labs in the U.S. in the 1940s.
This happens to me all the time—keeping my phone and car keys together in my pants pocket usually doesn’t cause any major issues. But to be clear, there’s a slight chance of electronic interference. For example, car key remotes rely on wireless signals, similar to keyless entry systems, while phones emit Wi-Fi or Bluetooth signals. If placed too close, signal conflicts might briefly cause the key to malfunction or weaken phone reception. The probability is low, though, as modern devices are well-designed to resist interference. Physically, the sharp edges of keys could scratch your phone’s screen or casing, so using a phone case is recommended. Over several years of doing this, I’ve only occasionally experienced delayed door locks, but a quick reset fixed it—no big deal. Bottom line: Don’t stress too much, but separating them into different pockets or bag compartments is better. Long-term safety tip: Regularly clean your devices to avoid dust buildup interfering with signals.
