This is likely part of the Vietnamese and Thai governments' rollout of biometric linking for bank accounts, similar to KYC regulations in the United States. The deadline for Vietnamese biometric linking was December 19th, 2025 [1].

The Vietnamese government has reported a rise in account takeovers and other banking thefts [2]. SIM-swapping has been a tactic used. Adding difficulty for fraudsters to trick unsophisticated banking customers is a valid security layer.

1. https://vietnamnet.vn/en/biometric-deadline-nears-millions-o...

2. https://evrimagaci.org/gpt/vietnam-faces-surge-in-sophistica... (expands upon https://vneconomy-vn/techconnect/mobile-banking-phat-trien-manh-tai-viet-nam.htm)

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basilikum a day ago | parent | next [-]

> SIM-swapping has been a tactic used. Adding difficulty for fraudsters to trick unsophisticated banking customers is a valid security layer.

You fight SIM-swapping by outlawing the moronic practice of using SMS for anything security sensitive. Not by blocking user modified OSes.

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morshu9001 a day ago | parent [-]

What's the alternative that regular people will understand how to use and not get locked out of?

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basilikum a day ago | parent [-]

TOTP is pretty standard. Give the user backup codes and just use normal recovery methods. For most things that might be email. For a bank it's probably identity verification.

	▲	freddie_mercury a day ago \| parent [-]
		The vast majority of Vietnamese I know do not have an email account. So that would be a dumb thing for a Vietnamese bank to use as a recovery method.

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alephnerd a day ago | parent | prev [-]

Partially, but it's also connected with the VNeID project [0]. The goal is by 2030 [1], all Vietnamese nationals and foreign visitors will have a digital biometric ID attached to themselves, and all services linked to said ID.

[0] - https://vneid.gov.vn/

[1] - https://tuoitre.vn/thieu-tuong-nguyen-ngoc-cuong-nang-cap-vn...