Another simple approach seen in many places (e.g. Nucleus OS) is using ASCII characters. That way, you get a unique identifier and as you get quicker at recogni

Another simple approach seen in many places (e.g. Nucleus OS) is using ASCII characters. That way, you get a unique identifier and as you get quicker at recognising them, you also get to immediately ASCII character values in hex, which is great for e.g. looking at coredumps.. >>> 'SEMA'.encode('hex') '53454d41'