from erasure import erasure_source, lazy_erasure, erasure_escape
import time
from datetime import datetime, timedelta

@erasure_source
def inputFromUser():
  x=raw_input()
  return x

def fiveseconds_policy(time):
  return (datetime.today()-time>timedelta(seconds=5))

@erasure_escape
def erasure_channel(a):
  print "The input you provided was [", a, "]"

def main():
  print "Please input your credit card number"
  cc=inputFromUser()
  lazy_erasure(cc,fiveseconds_policy)
  while(1):
    erasure_channel(cc)
    time.sleep(1)