The problem PRINTF: E-Xerox solves

we have developed a printing service platfrom named PRINTF that helps the students mostly to take their prinouts of manuals
as well as other non-curriculum prinouts easily without creating a rush outside the shop and maintaining the decorum of the
institution/organisation that occurs while taking prinout. so we have created a service in which a user can send the pdf for print to the portal at anytime of the day and as per their emergency they can pay at that time only when they send the pdf to portal for printout and the shopkeeper keeping you in a priority will finishing printing your stuff first and those who are unsure when they need the print but somewhere or the other in the day they need it they can just send the pdf to the portal for the print and can pay when they reach the shop. so our portal provides two types of payment paynow and pay at desk. so reducing the rush outside the ammenities shop and can easily take the prinout without
disturbing anyone.

Challenges we ran into

It was an amazing problem to work on. Initially we were looking for an database where we can get real time data of files uploaded on the portal. Another problem we encounter was the payment gateway integration for advance payment,Of the above two main challenges we were able to solve the database challenge,We used Firebase for real time display of data to admin and it also gives better queue system. For payment gateway we tried razorpay,strip,paytm and instamojo everthing!!!.But some were taking time for reviewing our request to use their Test API while other like on razorpay we were not able to sign in or make new accounts.