Automatic Fingerprint Database Update

Wi-Fi fingerprint-based localization stands out as one of the most appealing solutions among various indoor localization systems, primarily due to its independence from extra infrastructure and specialized hardware. To propel this approach toward a broader implementation, three key objectives are vital: widespread deployment ubiquity, high localization accuracy, and minimal maintenance costs. Yet, due to formidable challenges such as signal variation, device heterogeneity, and database degradation—all stemming from environmental dynamics—previous efforts often necessitate a compromise among these goals.