What Ensures Fairness Behind Every “Scratch & Win Instantly” Promotional Code?
From the moment each code is generated on the production line to the instant a prize is confirmed, the entire process operates under a principle that eliminates human intervention.
Late one afternoon, a convenience store near a university in Ho Chi Minh City was busier than usual. Like many students after class, 21-year-old Pham Ha My stopped by to grab a bottle of Trà Xanh Không Độ before heading home. During exam season, she often takes a few minutes to cool down and recharge before returning to her studies.
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| The small code on the back of the bottle label—the starting point of a system where the outcome cannot be tampered with. |
While waiting for a friend, My noticed the familiar “Scratch & Win Instantly” summer promotion on the bottle.
“Whenever I see a promotion, I simply scratch the label to reveal the code and enter it. I don't really expect anything,” she recalled.
A few seconds later, her phone vibrated with a notification informing her that she had won 50,000 VND.
“I was stressed because of exams, so winning a prize instantly really lifted my mood. It was exciting,” the university student said with a smile.
For My, entering promotional codes has now become part of the experience whenever she buys the drink.
“I still enter the code every time I drink Trà Xanh Không Độ. Every time I scratch the label, it's twice the excitement because every valid code gives me another chance to win an instant prize as well as the monthly grand prize,” she said.
It is a simple action, but one that adds a small spark of anticipation to the pressures of exam season.
Opportunities That Seem Purely Random
My's story is far from unique.
On a sweltering afternoon in Ho Chi Minh City, traffic packed the streets as delivery orders surged following the April 30 holiday. Thirty-year-old ride-hailing and delivery driver The Hien was racing against time to complete his deliveries while his phone kept buzzing with customers asking about their orders.
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| Cool down with a refreshing bottle of Dr. Thanh Herbal Tea and the chance to win prizes—a delightful treat to ease the strain of a long, hot day. |
Feeling exhausted under the intense heat, he pulled over at a roadside shop and bought a bottle of Dr Thanh Herbal Tea to cool down.
After taking a few refreshing sips, he scratched the label to reveal the promotional code and texted it to the 6020 hotline, as he always did.
“I entered the code just for fun. Honestly, my mind was still occupied with all the deliveries I had left,” he said.
Over the following days, his phone notified him that he had won three 20,000 VND mobile top-up cards.
“They're not huge prizes, but I use them right away to call customers and coordinate deliveries. It helps reduce my operating costs,” Hien explained.
For him, these small wins did not change his daily work, but they certainly made long hours on the road a little less stressful.
Behind Every Code: A Human-Free Process
Stories like those of My and Hien may appear to be driven by luck. In reality, every promotional code is backed by a tightly controlled system designed to prevent human interference.
Each promotional code consists of nine characters, combining letters, numbers, and special symbols to create hundreds of millions of possible combinations. From a mathematical perspective, successfully guessing a valid winning code is virtually impossible.
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| The code is generated and printed directly on the production line; there is no human involvement in the process of determining the result. |
More importantly, every code represents an independent opportunity. The more valid codes a participant enters, the greater the chance of winning.
Hung, a Production Manager, explained how the system works.
“On the production line, every bottle label passes through the printer in a fraction of a second. At that exact moment, a unique code is printed on the back of the label together with its pre-assigned status. There is no master list showing which codes will win, and no one knows where those bottles will eventually be distributed.”
He emphasized that the winning status is determined from the moment the code is created.
“We don't generate codes first and then decide the results later. Every code has a predetermined status from the moment it is issued, and that status cannot be changed under any circumstances.”
When consumers submit their codes, the system does not decide whether they have won. Instead, the code's pre-existing status is simply verified through the SMS platform or other random drawing mechanisms initiated by participants.
Technology Built Around Fairness
From a technological standpoint, the platform has been designed to ensure that every participant competes on equal terms.
Each promotional code is unique, confidential, and can only be used once. Winning outcomes are predetermined within the system and remain completely independent of any human decision-making.
“Thousands of consumers win prizes every single day, and the campaign continues to produce winners around the clock,” said Nguyen, Packaging Research and Development Manager.
From Small Wins to the 100 Million VND Grand Prize
With more than 500,000 prizes distributed throughout the campaign, winning is no longer an exceptional event. Every day, ordinary consumers like Ha My and Hien receive prizes that may not change their lives, but they certainly brighten an otherwise demanding day.
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| Ms. Trinh Thi Ngoc (Thanh Hoa) was one of the luckiest customers of Summer 2025, winning a First Prize of 50 million VND in cash by fueling up with Number 1. |
In addition to instant rewards, every valid promotional code is automatically entered into a monthly lucky draw for the campaign's 100 million VND grand prize.
The livestream drawings to determine each monthly grand prize winner will be held on June 4, July 20, and September 4, and broadcast live on the official Facebook pages of Dr Thanh Herbal Tea, Trà Xanh Không Độ, and Number 1 Energy Drink.
When the digital wheel finally stops, it takes only seconds for one promotional code to be selected and one winning phone number to be announced before thousands of viewers.
No one knows the outcome in advance.
No participant enjoys any advantage over another.
Whether it is an instant prize worth just a few thousand đồng or the campaign's 100 million VND grand prize, the underlying principle remains unchanged: no one can influence the outcome.
Ultimately, success does not depend on guessing correctly. It all starts with a simple step: scratch the label, reveal the code, and enter it.
Every day, thousands of consumers win not because they are luckier than everyone else, but because they chose not to let the opportunity pass them by.
Sometimes, just a few seconds spent entering a code can make the difference between missing an opportunity and seizing it.
Because sometimes, opportunity is closer than we think—it is waiting right beneath the label on the bottle in your hand.
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