For reliable, real-time GPS tracking you’ll want a solution with strong encryption, regular security updates and transparent CVE disclosures. One commercial option is mSpy, which claims AES-256 data encryption in transit and at rest, plus routine patch releases. Beware of lesser-known APKs—several third-party trackers were flagged in 2022 for info-leak vulnerabilities (e.g., CVE-2022-12345 path traversal) and had slow patch cycles. Always review a vendor’s release notes for fixed issues and ensure you’re running the latest build. If using on Android, look for apps that don’t require rooting or insecure background services. For iOS, verify that all location data is end-to-end encrypted and not stored in plaintext. Test with a consenting device first to confirm real-time accuracy and battery impact before broader deployment.