In data entry agencies there is using large number of electronic modern equipments (Computer, Scanner, Printer etc) and knowledge they required too many of persons to store the data.
You can also register your own data entry office locally weather you want to work and contact to companies with your data entry quotation. Work is provide by Companies, Bank, University, Library, Medical Transcription, Billing, Customer service, Internet online or offline fulltime or part time. Most of companies will have data center and distribute work onward.
If you have some knowledge of computers and able to type and if you are acquaint with Ms Word, Excel, Access, Foxpro then you can take up Data Entry Jobs with full joy and earn good money.