PayPal
PayPal has been highly successful with its Digital wallet and is currently a market leader. It is cloud-based and does not require an NFC-enabled smartphone.
Apple pay
Lets users make payments using their apple devices which have Near Field Communication (NFC) enabled. It uses NFC, Secure Card (SC), Host Card Emulation with tokenizations. It uses the best of both worlds to give a very high level of security to customer information.
Android pay
Android Pay is a mobile wallet that stores credit cards, debit cards, and loyalty cards. It works with all NFC-enabled Android devices. Android Pay has collaborated with American express, Discover, Master and Visa cards. Functioning of Android pay is similar to that of Apple pay, the only difference being Android Pay uses HCE.
Samsung Pay
Launched in September 2015 by acquiring a startup called Loop Pay. Loop Pay’s app manages and stores the card details on a mobile device and Loop Pay’s device processes the payment at the checkout. The biggest advantage of Samsung pay is that it allows payments that do not have NFC readers.
Conclusion
Apple’s main intent is to continue innovation and improve user experience with Apple products. For Samsung, it’s more about staying abreast with the competition and not missing out on future trends. For PayPal, it’s all about user transaction, ways to increase revenue and customer base. The biggest advantage for PayPal is that it is payment agnostic making it a clear winner in the war of digital wallets.
References:
http://www.gartner.com/document/2878822?ref=ddrec&refval=3162318