Set an alert radius around your location — at home or wherever you're traveling. When an earthquake is detected within that area, you'll get an instant alert so you can stay informed and take action quickly.

Tsunami alerts are shown when the USGS tsunami flag is set on a quake. That flag is only set when PTWC (Pacific Tsunami Warning Center) has issued an actual advisory — it's not set for every coastal earthquake, so you won't get false alarms for every offshore quake.

The app also includes practical tips to help you prepare and respond if a tsunami advisory is in effect.

Yes. Whether you're at home or on the road, you can set your radius to match where you are. Instant earthquake alerts, tsunami advisories, and safety tips help you stay aware in unfamiliar places as well as in your own neighborhood.

MRZ (Machine Readable Zone) parsing:

Standardized format, so it works reliably for:

• Passport number
• Name
• Date of birth
• Gender
• Expiry date
• Nationality

Visual zone extraction:

Works well for passports that:

• Use supported languages (English, French, Spanish, German, Italian, Portuguese, and others)
• Follow common layouts (fields above/below labels)
• Use standard field names we recognize

1. Unsupported languages: If keywords aren't in our list, extraction may fail.
2. Non-standard layouts: Unusual positioning may require manual adjustments.
3. OCR quality: Poor scans or photos can affect text recognition accuracy.
4. Non-standard formats: Some countries may use different field names or structures.

The app includes several robust features:

• Multi-language keyword support: 20+ languages supported
• Flexible date parsing: Handles multiple date formats
• Adjacent line checking: Handles layout variations
• OCR error correction: Handles common OCR mistakes
• Pattern matching: Recognizes common formats like "STATE,COUNTRY"

PlaceMark uses geofencing technology to detect when you arrive at a specific location. When you set a reminder, you select a location on the map and set a radius. When your device enters that area, you'll receive a notification.

Yes! The app monitors your location in the background and will notify you even when the app is closed. Make sure to grant location permissions and enable background location updates for the best experience.

If set, cooldown ensures that if you bounce in and out of the geofence within the set time, subsequent alerts are skipped; a visit an hour later is not.

Location accuracy depends on your device's GPS signal strength and the radius you set. We recommend setting a radius of at least 100 meters for reliable detection. The app uses a combination of GPS, Wi-Fi, and cellular data for the most accurate results.