CBN’s device binding policy ushers in a new era for mobile banking security in Nigeria

By Francisca Anuforo

Nigeria’s digital banking landscape has entered a new phase with the implementation of the Central Bank of Nigeria’s (CBN) mandatory device binding policy, a security measure expected to strengthen fraud prevention while changing how millions of Nigerians access mobile banking services.

The policy, which became effective on July 1, 2026, requires banks, fintech companies and other regulated financial institutions to link every customer’s mobile banking application to a single registered device.

The directive follows a payments system circular issued by the CBN earlier this year, giving financial institutions 109 days to update their systems and comply with the new security requirements.

Why the CBN introduced device binding

The initiative is aimed at tackling the increasing cases of SIM swap fraud, identity theft and unauthorised account takeovers that have continued to threaten Nigeria’s growing digital payments ecosystem.

Cybercriminals often exploit stolen login credentials or compromised SIM cards to gain access to customers’ banking applications and move funds within minutes.

By tying mobile banking access to a verified physical device, the CBN hopes to make such attacks significantly more difficult and reduce financial losses suffered by individuals and businesses.

Key changes customers should know

Under the new framework, customers can only use their banking application on one mobile device at a time.

Anyone changing phones, reinstalling a banking application or attempting to activate the app on another device must complete fresh identity verification before regaining full access.

A major feature of the policy is the introduction of a 24-hour cooling-off period for newly activated devices.

During this period, both incoming and outgoing transactions are limited to ₦20,000. Newly opened accounts are also subject to the same transaction cap.

Although banks may choose to impose lower limits based on their internal risk management policies, they are not permitted to exceed the regulatory threshold.

Strengthening defence against fraud

According to industry experts, the temporary transaction limit serves as an important safeguard against fraud.

If a criminal succeeds in activating a customer’s banking application on another device through a SIM swap or social engineering attack, the restriction prevents immediate large-value transfers, giving the genuine account holder time to report the incident and secure the account before significant losses occur.

The policy therefore introduces an additional layer of protection beyond passwords, PINs and one-time passwords (OTPs).

Impact on customers and businesses

While the security benefits are expected to be significant, the policy also introduces some operational challenges.

For most individual users, the 24-hour transaction restriction may simply be a temporary inconvenience when switching to a new phone.

However, business owners, traders, freelancers and other users who depend on instant digital payments may experience temporary disruptions to their daily operations whenever they replace or reset their mobile devices.

Industry stakeholders believe financial institutions will need to educate customers adequately to minimise confusion during the transition.

Dependence on BVN and NIN verification

The new security framework also increases reliance on Nigeria’s digital identity infrastructure.

Every device migration or account reactivation requires verification through the Bank Verification Number (BVN) and National Identity Number (NIN) databases, supported by liveness verification to confirm the user’s identity.

As a result, any downtime or delays affecting these identity platforms could temporarily slow device activation requests, leaving banks and fintech companies unable to complete the verification process until the systems are fully operational.

What this means for Nigeria’s digital economy

The implementation of device binding represents one of the most significant security upgrades in Nigeria’s financial services sector in recent years.

Although customers may need to adjust to stricter verification procedures and temporary transaction limits, the policy reflects the CBN’s broader strategy of balancing convenience with stronger cybersecurity as digital payments continue to expand across the country.

For banks and fintech operators, the focus will now shift to ensuring seamless implementation, maintaining customer confidence and delivering secure digital banking services without compromising user experience.