For me it’s the notification light you used to find on older phones, was particularly good to know if your phone was charged without picking it up
this post was submitted on 28 Dec 2023
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IR blaster for smartphones. I still have one on mine and I can use it for tons of stuff, not just as a TV remote.
I even worked for a company who made lots of IR based products (taps/faucets, accessibility stuff) and it was amazing how many people had to buy the dedicated remotes for these products for extra money.
When I asked them if their phone has an IR blaster, so they could just download a free app and use it instead. "I have an iPhone" was the most common answer.
There are small and cheap USB-C IR dongles around nowadays - generally USB-C has been a blessing for making additional hardware features available on smartphones.
My current phone does have IR - though I'm not really using it much since most of the existing Android software for that is horrible (broken, ad-infested, requires account and access to everything, ..), and I have too many open projects to start another one for writing my own software for that.
IR blasters were such a treat, still fucking hate when the remote stops working or the battery runs out