
One of the strongest indicators of potentially fraudulent activity is geographic inconsistency. A scammer who has compromised an account in one country might attempt to access it or make a transaction from a distant location using roaming.

The Device Status API integrates securely and silently into your backend, performing a direct query with the Mobile Network Operator (MNO) to obtain the current connection status.
The Real-Time Verification Flow:
Critical Operation Detection: The customer initiates a high-risk operation, such as starting an onboarding process, a loan application, or a large online payment.
Query to Plusmo's API: Before allowing the process to continue, your institution queries the Plusmo API, sending the associated phone number (MSISDN) of the device: “Is the mobile device associated with MSISDN +5491145388773$ in roaming?”
Mobile Operator Response: The operator instantly responds with a binary confirmation, Yes (TRUE) or No (FALSE). Additionally, it provides the country code (MCC) where the device is located.
Risk-Based Decision: Your institution reviews the response:
-If it is TRUE (it is in roaming), and your risk policy considers this unacceptable for that operation (e.g., onboarding), the operation is denied or the customer is redirected to a stricter manual verification process.
-If it is FALSE (it is not in roaming), the high-risk process continues normally.
This mechanism allows your company to apply dynamic risk rules based on the geography and operational status of the device.

The ability to confirm device status and location goes far beyond fraud prevention in the financial sector.
IoT (Internet of Things) Applications: In remote monitoring and management systems, knowing a device's connection status (e.g., a sensor, a smart meter) is crucial.
-Diagnosis and Support: Verify if an IoT device has stopped working because it was moved (change of location) or simply is in an area without local coverage and had to enter roaming.
-Asset Management: Confirm the last reported location of mobile assets for inventory and security.
Remote Monitoring and Field Services: Logistics or security service companies can use the API to optimize their operations.
-Logistics and Supply Chain: Verify the geographical location of the driver or package (if it has a SIM device) within a time range to confirm route compliance.
-Travel and Assistance Insurance: Confirm that the customer requesting assistance or filing a claim is indeed in the country they reported (i.e., by detecting if they are in roaming).
Financial Institutions and E-commerce: The primary utility remains risk mitigation.
-Adaptive Authentication: Implement a risk scoring system. If a device is roaming in a low-risk country (e.g., a neighboring country), the system may request a simple 2FA verification. If it is in a high-risk country, the operation is automatically denied.
-Card Fraud Management: Cross-reference the location of the card transaction with the known location of the associated device to identify fraud attempts when the cardholder is traveling.