Question: ShopBack is affiliated with which Indian electronic payment brand?

Context paragraphs:
PAX Technology: PAX Global Technology (informally known as PAX or PAX Technology) is a major suppliers of electronic payment terminals.  Headquartered in Shenzhen (China), PAX has a manufacturing and research and development facilities in China and direct offices in China, the USA and Italy.  The rest of the world goes to market through a wide network of channel partners and payment system integrators.  As of 2017 it had over 17 million terminals installed worldwide.  The company is listed on the Hong Kong stock exchange as PAX Global Technology Ltd and is ranked as one of the top 3 global payment terminal solution suppliers.

ShopBack: ShopBack is a Singaporean-headed e-commerce startup that utilises the cashback reward program.  It allows online shoppers to take a portion of their cash back when they buy products through the service.  They also provide discount coupons and voucher codes for online shopping.  It is currently affiliated with over 300 merchants from all over the world, including online retail giants Taobao, Zalora, Lazada_Group, Rakuten, Groupon, EBay, Paytm, ShopClues, Jabong.com & Flipkart.

EFTPOS: Electronic funds transfer at point of sale (EFTPOS ) is an electronic payment system involving electronic funds transfers based on the use of payment cards, such as debit or credit cards, at payment terminals located at points of sale.  EFTPOS technology originated in the United States in 1981 and was adopted by other countries.  In Australia and New Zealand, it is also the brand name of a specific system used for such payments; these systems are mainly country specific and do not interconnect.

Decoupled debit card: A decoupled debit card is a debit card in the US that is not issued by, and not tied to, any particular retail financial institution, such as a bank or credit union.  This is based on the ability in the US ACH payment system to make an electronic payment from any bank or credit union without needing to use a card issued by the bank or credit union.  A third party, such as a retailer, can create a decoupled debit card which will use this system to make a payment from the customer's checking account.  They may do this as part of a loyalty scheme or to reduce their own debit card processing costs.

E-commerce payment system: An e-commerce payment system facilitates the acceptance of electronic payment for online transactions.  Also known as a sample of Electronic Data Interchange (EDI), e-commerce payment systems have become increasingly popular due to the widespread use of the internet-based shopping and banking.

Electronic Payment Services: Electronic Payment Services (Chinese: 易辦事), commonly known as EPS, is an electronic payment system in Hong Kong, Macau, and with limited acceptance in Shenzhen; since it began operations in 1985.  The service is provided by EPS Company (Hong Kong) Limited.  Currently there are over 25,000 acceptance locations.

Paytm: Paytm is an Indian electronic payment and e-commerce brand based out of Delhi NCR, India.  Launched in August 2010, it is a consumer brand of parent company One97 Communications.  The name is an acronym for "Payment Through Mobile."  The company employs over 13,000 employees as of January 2017 and has 3 million offline merchants across India.  It also operates the Paytm payment gateway and the Paytm Wallet.

Secure Mobile Payment Service: Secure Mobile Payment Service (SEMOPS) is a project for developing a secure, universal electronic payment service, which allows real time payment transactions independently of the type and value of the purchase.

ACI Worldwide: ACI Worldwide (NASDAQ: ACIW ) is a payment systems company headquartered in Naples, Florida.  ACI's products and services are designed to facilitate electronic payments and are used principally by financial institutions, retailers and electronic payment processors. ACI's portfolio of products generally addresses four primary market segments:

USA Technologies: USA Technologies Inc. is an American company known for its work with ePort cashless acceptance technology running on their patented ePort Connect service a PCI compliant, comprehensive suite of services designed specifically for the self serve, unattended market.  ePort Connect wirelessly facilitates electronic payment options to consumers (so that payment can be made with credit, debit, or NFC enabled electronic wallets like Apple Pay and Android Pay) while providing operators with both telemetry and machine-to-machine (M2M) services.  ePort technology is primarily found in vending machines, kiosks and point-of-sale (POS) terminals, but the ePort Online and ePort Mobile products have extended the network to accept recurring payments from a PC or retail outlets and the taxi industry through smartphone devices.  The company also produced other technology to address needs within the unattended industry such as the More Prepaid and Loyalty consumer engage program, ePort beacon, facilitating Bluetooth payment options, and the EnergyMiser, a device that reduces the energy consumption of vending machines.

Supporting paragraphs: ShopBack Paytm
Answer: Paytm