Wireless Technology

Tech / 12 Sep 2026 / 8 min read

What NFC Does When You Tap Your Phone

Tapping a phone against a payment terminal, transit gate, accessory, or small tag can trigger an action almost instantly. It feels simpler than joining Wi-Fi or pairing a Bluetooth device because there may be no network name, password, or visible connection process. The technology behind many of these taps is Near Field Communication (NFC). The useful mental model is that NFC creates a very short-range radio interaction between compatible devices. The tap itself is not transferring information through physical contact. Bringing the devices close together puts their NFC antennas in a position where radio communication can take place.

NFC Smartphones

Tech / 12 Sep 2026 / 8 min read

What a Bluetooth Audio Codec Changes

Two pairs of Bluetooth headphones can connect to the same phone yet use different methods to carry the audio. You may also see codec names in specifications or device settings and wonder whether changing one will transform the sound. A Bluetooth audio codec is the method used to encode audio into a form suitable for transmission and decode it again at the receiving device. It matters, but it is only one part of the listening chain. The codec can affect audio quality, delay, radio usage, and power requirements; it cannot compensate for poor speakers, a weak recording, or every limitation elsewhere in the system.

Bluetooth Audio

Tech / 08 Sep 2026 / 7 min read

Screen Mirroring vs Casting: What Your Device Actually Sends

Sending a video, photo, presentation, or phone screen to a television can look like one simple action. Yet two sessions that appear similar can behave very differently. In one, every movement on your phone also appears on the TV. In another, the TV keeps playing after you switch apps or even stop actively using the phone. The difference is often whether you are mirroring a screen or casting media. These terms are sometimes used loosely by apps and device makers, but they describe two useful mental models: mirroring sends a representation of what is happening on one device, while casting can hand media playback to another device.

Screen Mirroring Casting

Tech / 05 Sep 2026 / 8 min read

Why Bluetooth Headphones Can Sound Worse When You Use the Microphone

Bluetooth headphones can sound clear and spacious while you listen to music, then suddenly sound narrower or less detailed when you join a call, start voice chat, or enable the headset microphone. The headphones have not necessarily developed a fault. In many cases, the Bluetooth connection has changed how it carries audio. The reason is easiest to understand by separating two jobs: sending good-quality audio to the headphones and sending microphone audio back to the phone or computer at the same time. Traditional Bluetooth audio handles those jobs using different operating profiles, and the profile designed for two-way conversation has different capabilities from the one commonly used for music.

Bluetooth Audio

Tech / 03 Sep 2026 / 7 min read

How NFC Works on Phones and Why It Needs Such Short Range

Tapping a phone against a payment terminal, transit reader, accessory, or small electronic tag can trigger an action almost immediately. The technology behind many of these interactions is NFC, short for Near Field Communication. NFC is a wireless technology, but it behaves differently from Wi-Fi or Bluetooth. It is designed for communication across a very small distance, usually only a few centimetres. That short range is not simply a limitation. It is one of the characteristics that makes tap-based interactions practical.

NFC Smartphones

Tech / Updated 15 Sep 2026 / 8 min read

How Bluetooth Audio Codecs Affect Wireless Listening

Wireless headphones often advertise support for audio codecs such as SBC, AAC, aptX, or LDAC. These names can make Bluetooth audio seem more complicated than it needs to be. A codec is simply part of the process used to represent audio efficiently enough to send it over a Bluetooth connection. Codec support can influence sound quality, latency, bandwidth use, and connection stability, but the codec name alone does not determine how good a pair of headphones will sound.

Bluetooth Audio