As per the Govt. guidelines, all the PIO card holders have to apply for OCI cards.
The last date for PIO card holders to apply for OCI has been extended upto 30.06.2017.
The applicants have to apply online on the following link:http://mha.nic.in and submit the printout with all the relevant documents at the Embassy.
The OCI card is a smart card which will facilitate quicker immigration clearance at the ICPs and also for obtaining various consular services from the Indian Missions.
For those residing in India, it will facilitate in availing various services in India.
The transfer from PIO to OCI will be gratis.