80 P.W. 13 is the Alternate Nodal Officer, Vodafone who had received requisition from CID regarding authenticate of IPDR against mobile number 9733185096 along with CAF (Customer Application Form) and provided data along with CAF as per the requisition in Vodafone letter head (exhibit 33) and duly signed into it (exhibit 33/1). P.W. 13 also issued certificate u/s 65 B of the Indian Evidence Act (exhibit 34) to prove the authenticity and justification of the CD data duly signed by him (exhibit 34/1) as he had given IPDR data in a CD (mat exhibit 6) and also signed into it (mat exhibit 6/1). According to P.W. 13 the original CAF (exhibit 35) is in the name of Barnali Baksi with mobile number 9733185096 and identified the signature of distributor point namely Arati Mobile Counter (exhibit 35/6). P.W. 13 also stated that the proof of identity was also submitted by Barnali Bakshi for mobile number 9733185096 and identified the signature of distributor point namely Arati Mobile Counter (exhibit 35/2). On the requisition dated 21/9/17 P.W. 18 received some articles from Mohan Thapa, Alternate Nodal Officer, Vodafone Mobile Services Ltd through constable Subhrajit Santra of monitoring unit, CID, West Bengal which P.W. 18 seized under proper seizure list and one moserbaer Pro compact disk duly signed by Mohan Thapa which contained IPDR data of the mobile number 9733185096 for the period of last one year, authenticated CAF of mobile number 9733185096, certificate u/s 65 B of Indian Evidence Act and duly issued and signed by Mohan Thapa. P.W. 18 prepared seizure list in presence of seizure witnesses Barun Kumar Nayek and Jayanta Sarkar as produced by constable Subhrajit Santra and it bears the signatures of the seizure witnesses and from whom it was seized and also his signature along with date and identified the signature and date of constable Subhrajit Santra (exhibit 57) as he works in monitoring unit, CID, West Bengal. P.W. 18 also identified the signature and date of Barun Kumar Nayek (exhibit 57/1) and the signature of Jayanta Sarkar (exhibit 57/2) as Barun Kumar Nayek and Jayanta Sarkar works in the unit of P.W. 18. The witness P.W. 18 also identified his signature (exhibit 57/3) and the seizure list which had been prepared by him (exhibit 57/4). P.W. 18 identified the forwarding letter (exhibit 33) issued by Mohan Thapa and certificate u/s 65 B of the Indian Evidence Act (exhibit 34), the original CAF (exhibit 35) and also a copy of CD and P.W. 18 tried to open the CD of I.O.’s copy with the password provided by Mohan