Section 7(2)(b) in The Companies (Director Identification Number) Rules, 2006
(b)the form needs to be digitally signed by a Chartered Accountant or a Company Secretary or a Cost and Works Accountant holding a certificate of Practice under the provisions of the Chartered Accountants Act, 1949, the Company Secretaries Act, 1980 ana the Cost and Works Accountants Act, 1959 respectively.