Users hand money to something they can recognize in a second.
E-wallets, payment gateways and money transfer apps live on the habit of opening the app every day. Sinh Vũ helps the product get a mark that is recognized at once and an interface that stays consistent no matter how many features you add.
Three things first: an app icon that is recognizable at small sizes, a template for the QR plate at the point of sale, and a fixed template for transaction notifications. Those three are where users meet the wallet most, and also where it is easiest to fake.
Able to stand alone among dozens of other icons on a phone screen, at a size no bigger than a fingertip.
A branded frame and a consistent placement, so sellers and buyers know at a glance which code is the real one.
Amount, sender and time always appear in the same order, so users understand at a glance.
They all move money, but the users and the meeting points differ for each kind of product.
Their customersMass-market users open the app many times a day to pay, top up and transfer money.
Brand challengeKeep the app light and recognizable even as features keep growing.
Their customersBusinesses and shops integrate to receive money; buyers only see the payment page for a few seconds.
Brand challengeA payment page that carries the seller's own face while still showing the buyer which processor is behind it.
Their customersUsers scan a code at a cafe, a market or a shop; sellers need a plate that is easy to see and easy to scan.
Brand challengeMake the plate and the payment-accepted sign clear enough to scan correctly the first time, and distinctive enough to be hard to fake.
These are the places where wallets and payment apps tend to lose trust just when users are ready to pay.
A stall sticks codes from several wallets and banks right next to each other; buyers are unsure whose code is whose, and a bad actor can paste over another code.
A plate with a branded frame, a readable entity name and a consistent placement, plus a short guide sheet for sellers.
Start from this problemMany financial apps share one or two familiar color tones, which are hard to tell apart at small sizes.
Choose a mark and a lead color that rarely overlap, and test at real icon size on many generations of phones before locking.
Start from this problemAmount, sender and status sit in a jumble; users do not dare trust a real message and easily trust a fake one.
One fixed notification template with a set order and voice, used for every type of transaction.
Start from this problemA new service every quarter, the home screen gets crowded, and existing users cannot find what they use most.
A design system with rules for where a new feature goes, and motion that leads the user's eye to the main task.
Start from this problemAt First bank linking. Users have downloaded and registered but do not yet dare to top up or link an account, because it is unclear where the money goes and who is behind it.
Touchpoints are the places where users see, touch or hear the wallet. You do not need to do everything at once. These five decide most of the trust.
The first thing seen every time the app opens.
The place where users are holding money in their hands, so every word must be clear.
It is the wallet's face on the street, and also the easiest thing to fake.
Users glance at them many times a day, so consistency is vital.
Users screenshot it and send it to each other as proof, so this screen carries the wallet's name the furthest.
Listed in the order to do them. A newly launched product can stop at step two; a wallet that has grown goes all the way.
Name, mark and color: the base for the app icon and everything after.
A digital design system for the payment interface and the notification template.
QR plates, payment-accepted signs and materials at the point of sale.
Motion for the launch and confirmation screens, so actions feel fast and stay clear.
Sinh Vũ has built the brand for eMoney, a money transfer wallet in the Cambodian market, and has not published an e-wallet project for the Vietnamese market. iCheck is a near neighbor: an app that needs users to trust it before they tap.
For millions of people in Cambodia, the Metfone SIM in their pocket is also where they keep their money. eMoney, the money transfer wallet of Metfone and MB Bank…
A wallet has to say two things at once, money moves fast and the sender feels at ease; the mark carries motion right in the letterforms.
The first identity for iCheck, the barcode-scanning app that opened product origin tracing in Vietnam, turning a cold scan into a nod of consumer trust.
A cold scan action turned into a reassuring nod of confirmation; a lesson for any app that needs trust the first time.
The principles behind it
Avoid padlocks, shields and coins, because every wallet uses them. Sinh Vũ looks for something distinctive about the product, such as how the money moves or who it serves, then tests it at app icon size before locking.
Nothing is impossible to fake, but you can make the real one easy to recognize: a consistent branded frame, the receiving entity's name printed clearly, a fixed way of mounting it. Formal verification still needs the technical side and the banks involved.
Rules for where a new feature goes, its priority on the home screen and how it is named. With a digital design system, whichever team adds a feature, it comes out with the same feel.
The same order for every type of transaction, short words, nothing alarming. Key information such as the amount and the parties comes first, and how to ask for help comes after.
Not yet. The minimum is a name, a mark, colors, an app icon and a notification template. The full design system comes when the product team grows.
A few lines about your users, your points of sale and what is stuck is enough. Sinh Vũ reads it and replies within one working day.