DGFT vide Trade notice no. 15/2018-19 – dated- june 04, 2018 has clarified that now, a person desiring to make online/digital payment can login in e-MPS using his PAN details. There in no need for having digital signatures for making digital/online payment.
Read More at: http://dgft.gov.in/Exim/2000/TN/TN18/Trade%20Notice%2015.pdf