Yubico and the Yubikeys are the best way to secure your systems

In my relatively small office, we use Yubico Yubikeys (specifically the 5C NFC) to secure access to the computers. I personally also use mine to secure our email server, our NAS that contains client files, and to secure our network & wifi routers. I opted to start using the Yubikeys because of the increase in cyber attacks and specifically the increase in ransomware attacks. Our state bar charges us with the requirement that we maintain competency in digital security and that we take take all necessary steps to protect client data and PII (like DOB, DL numbers, complete SSN, etc.). In the past I've noticed certain staff writing down their logins on post-it notes and either sticking them on their monitor or leaving them in the top desk drawer. I decided that rather than get after my staff and then try to monitor compliance, the Yubikeys were the way to go. Now even if they do leave their logins on a post-it note, no one will be able to access their computers without the physical key present. It wasn't a cheap solution, cheaper than a ransomware attack or having a client's PII compromised.