.NET Short Unique Identifier

Question

I need a unique identifier in .NET (cannot use GUID as it is too long for this case).

Do people think that the algorithm used here is a good candidate or do you have

Answer 1

var ticks = new DateTime(2016,1,1).Ticks;
var ans = DateTime.Now.Ticks - ticks;
var uniqueId = ans.ToString("x");

Keep a baseline date (which in this case is 1st Jan 2016) from when you will start generating these ids. This will make your ids smaller.

Generated Number: 3af3c14996e54