Offline CAPI
Logic, validation, calculations, rosters, media, signatures, and local response queues continue without connectivity.
SierraTec Field
Collect trustworthy data when the network disappears
Run offline interviewer workflows with assignments, household and case data, GPS, media, validation, signatures, local encryption, supervisor review, and resilient synchronization.
Offline first
Field device status
Instrumentv4.2 downloaded
Assignments32 cases
NetworkOffline
Pending sync7 interviews
Field operations
More than offline forms
Enumerator management
Assign workloads, geography, cases, languages, supervisor groups, callbacks, and reinterviews.
GPS and GIS
Capture points, routes, polygons, accuracy, geofences, offline maps, and location validation.
Back-checks and supervision
Run spot checks, recontacts, correction queues, field notes, and audit histories before approval.
Explore capabilityCase management
Track households, facilities, businesses, people, repeat visits, and nested entities across forms.
Explore capabilityLow-bandwidth sync
Compress payloads, prioritize text, retry safely, and resume interrupted transfers when networks return.
Sync workflow
Capture locally. Sync safely.
- DownloadInstrument, translations, lookup data, assignments, and map tiles.
- Collect offlineRun logic, validation, calculations, GPS, media, and consent locally.
- Queue encrypted dataProtect pending interviews and record sync status.
- ReconnectUpload in resumable batches with conflict detection and supervisor status.
Connection unavailable
Pending field interviews
7queued interviews
18.4 MBencrypted media
100%local validation complete
Responses remain queued until a secure connection is available.
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Take SierraTec Survey into the field
Build one instrument, assign it to teams, collect offline, monitor quality, and synchronize into the same analysis workspace.