hao do you ensure important phone numbers are always at your

你怎么保证重要的电话号码总是触手可及?
答案：recite all the telephone number?I am not crazy like that as I have better ways to keep all those important phone numbers.
The first choice is to use a business card documentation system,like Han Wang Business Card System,which can scan all the business card and put them into different cateloges,so that we can have a E-copy of those telephone numbers,address and other info we need about our customers and venders.
The second way is to have a hard copy.A porket business card holder or a printed copy of VIP contact list helps when a computer is not available.And another advantage is it is light and convienient for you to take it everywhere.
One more tools is your Mobil Phone.the Mobil Phone nowadays becomes more and more multi-functional,which allow us to put lots of info in it,and it is really keep important phone numbers always at your fingertips that with a Mobil Phone,you can easily get the telephone number you need by move your fingers a little bit.