According to information and communication technology act 2006, Electronic signature means any data in electronic form which

a) is connected directly or logically with any electronic data

b) the proof of any electronic signature is completed in integration of the following conditions:
1)which is uniquely connected with the signatory ;
2)which is able to identify the signatory;
3)which is created in such a safe method where the control of the signatory is maintained ;
4)which is related with the attached information is such a way that it is able to detect any change in the side data during
transmission. in the same act, the digital signature has been given legality to the matters of the signature in all cases.
Such as: None should require to present in the office in parson for submitting different applications; Different government
transactions can be made speedly from each corner or of the country : Information can be retrieved within a blink of the
eye from age old archives if the same database is ussed in more then one offices ,the information exchange .