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Nowadays, if someone mentions, "Hey, I don't have any cash on me," the other person immediately responds, "No problem, just use UPI." From a roadside tea stall to a sprawling mall, you can now spot a QR code displayed just about everywhere; you simply pull out your mobile phone, scan the code, and transfer money in a matter of seconds.

But has the question ever crossed your mind: how exactly does this entire system work? How, after all, does money travel from one bank to another with such incredible speed? Furthermore, UPI is no longer limited solely to payments; it has now begun incorporating features such as cardless cash deposits at ATMs.

**What exactly is UPI?**
UPI stands for the Unified Payments Interface.
It was launched by the NPCI (National Payments Corporation of India).
It is widely regarded as the backbone of India's digital payment ecosystem.

**Before the advent of UPI...**
Previously, one had to memorize bank account numbers.
One had to manually enter IFSC codes.
People often had to wait for a beneficiary to be added and verified.
**Now, UPI has completely revolutionized the payment landscape.**
**Now, money can be sent simply using:**

A mobile number
A QR code
Or a UPI ID

**UPI at a Glance**
Instant money transfers are possible 24/7.
There is no need to memorize account numbers.
Payments have become effortless thanks to QR scanning.
Transfers are executed using a mobile number.
Preparations are underway to enable cardless cash deposits at ATMs.
Easy accessibility via apps such as BHIM, PhonePe, and GPay.
**How ​​does the money get transferred in mere seconds?**

The technology powering this process is IMPS.

In reality, UPI operates through a combination of IMPS (Immediate Payment Service), banking networks, and the NPCI system.

**UPI**
The moment you scan a QR code:
1. Your payment app connects with your bank.
2. The NPCI routes the transaction.
3. The funds are sent to the recipient's bank.
4. Confirmation is received from both banks.
5. The transfer is completed.

The most remarkable aspect is that, with UPI, this entire process is executed within just a few seconds.

**What is a VPA?** This is your true digital identity.
In reality, your bank account details are not directly displayed within UPI.

Instead, a VPA (Virtual Payment Address) is used.

For example:

name@oksbi
mobile@paytm
abc@okaxis
Essentially, this serves as your digital address.
Why is UPI considered so secure?
UPI employs a two-layer security system:

1. The mobile number linked to your bank account.

2. Your UPI PIN.

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This means that simply possessing the mobile phone is not enough to transfer funds; transactions are impossible without the PIN.

What is the ICD feature?
UPI is no longer limited solely to making payments.
It now includes the ICD—or Interoperable Cash Deposit—feature.
With this feature, an ATM card is no longer required.
You can deposit cash into an ATM simply by scanning a UPI QR code.

How does it work?
Here is a step-by-step explanation:

1. Go to an ATM.
2. Select the 'Cash Deposit' option.
3. A QR code will appear on the screen.
4. Scan the code using your UPI app.
5. Insert the cash into the machine.
6. The money will be deposited into your account.

What is the biggest benefit?
Thanks to UPI, the need to visit a bank branch has significantly decreased.
There is no longer any need to carry a physical card with you.
This facility can be utilized even at ATMs belonging to other banks.
It will provide immense relief to people living in small towns and villages.

Disclaimer: This content has been sourced and edited from Zee Business. While we have made modifications for clarity and presentation, the original content belongs to its respective authors and website. We do not claim ownership of the content.