Overview

• A New York wife downloaded an electric toothbrush app to encourage her children’s dental hygiene, only to find it also tracked her husband’s brushing sessions.
• Brushing logs showed him scrubbing at home during work hours on Fridays, contradicting his office schedule.
• She later learned he was meeting a work colleague at their empty home, confirming the affair illuminated by the app’s data.
• Investigators say timestamped, location-based information from everyday gadgets provides reliable, emotionless proof of a partner’s whereabouts.
• A separate Australian case used supermarket loyalty records to expose a husband’s infidelity by revealing purchases near his ex-partner’s residence.