Return a random string of numbers and letters using only characters that read unique.

ReadablePin

#! /usr/bin/ruby

class ReadablePin

  def new( len = 8 )
    pin   = ''
    chars = ("a".."z").to_a + ("0".."9").to_a
  
    remove_each = ["i", "o"]
    remove_each.each do |each|
      chars.delete(each)
    end
  
    while !finished
      1.upto(len) { # len.times { pin << chars[rand(chars.size-1)] }
        |i| pin << chars[rand(chars.size-1)]
      }
      check = User.where(:job_id => @job_id).and(:pin => pin).first
      if check
        finished = true
      end
    end
    return pin
  end

end