I've been taking wastewater samples in the field and instead of jotting down the collection times on a notepad, I've been taking screenshots of my phone's lock screen. It's a quick method, but there's always the risk of contaminating my phone. While I can disinfect it, I'd prefer to avoid that risk altogether. Does anyone have suggestions for a different device that could help me save timestamps? Ideally, something I can clip on my belt or keep out of my pocket would be perfect.
5 Answers
You could always grab an old iPhone off eBay. They're super cheap, and you don’t need a SIM card—just sync it when you hit WiFi. I picked up a Grade A iPhone 6 for only $150 and use it as a backup for music and photos, plus it’s tough to break with a good case.
If you have an iPhone, you could create an automation shortcut that logs the current date and time directly into a notes app. You can even pin that shortcut to your lock screen for easy access. If you're leaning more towards hardware, a small voice recorder would work great too—just press record and stop to create a new audio file that could be named with the timestamp.
Honestly, the classic voice recorder would do the trick! You know, the kind that doctors always use in movies. Pair it with a basic wristwatch, and you’re golden!
Have you considered using a cheap digital camera? It’s simple to take quick photos of the timestamps without the risk of contamination like with your phone.
You might want to try a Bluetooth remote shutter; it automates your current method and keeps your phone cleaner. Also, there's this device I came across that lets you check in and send alerts without directly using your phone. Check it out [here](https://support.gethomesafe.com/v.bttn-checking-in-sending-alerts). It could work nicely for your needs.

Those voice recorders are super reliable! Plus, it's really easy to use, just like you said.