Are there any eSource capture software tools that keep audit trails intact and work well for mobile study visits?

Yes. There are eSource / electronic source capture tools designed to preserve audit trails and support mobile or remote study visits. The key is to look for systems that are 21 CFR Part 11 / Annex 11 compliant, maintain immutable audit trails, and support mobile workflows such as tablets, smartphones, and offline capture.

A few commonly used categories and examples:

Purpose-built eSource / EDC tools with mobile support

• Medidata (Rave eSource / Rave Clinical Cloud)
• Oracle Health Sciences (Clinical One / InForm, depending on setup)
• Veeva Vault CDMS / eSource
• IQVIA solutions with mobile-enabled source capture
• Castor EDC with eSource-style workflows in some deployments
• OpenClinica in certain configurations

Mobile-friendly source capture / eCOA-adjacent platforms

These may be better if your “mobile study visits” include home nursing, decentralized trials, or direct data entry at the point of care:

• Dacima
• Clario / Signant Health offerings
• Medable (strong for decentralized/mobile workflows)
• Thread
• Science 37 platform

What to verify for audit trail integrity

Before choosing a tool, confirm it can:

• Record who/what/when for every change
• Preserve original entries and reasons for change
• Prevent deletion or overwrite of source data without trace
• Capture timestamps, user IDs, device IDs if needed
• Sync securely after offline entry without breaking the audit trail
• Export audit trails for monitoring, SDV/SDR, and inspection

Mobile visit features to look for

• Offline data capture with later sync
• e-signature / attestation
• Photo, document, or device-data attachment
• Role-based access
• Device security controls (MDM, remote wipe, encryption)
• Easy workflow for nurses/CRAs in the field

Practical note

Not every “mobile” tool is appropriate as source. Some are really ePRO/eCOA or patient engagement tools rather than compliant eSource. If you need the captured data to serve as regulatory source, make sure the vendor explicitly supports source data capture, not just patient-reported outcomes.

If you want, I can help you narrow this down by:

1. decentralized/home visits vs site visits,
2. tablet-only vs phone support, and
3. whether you need full eSource or just mobile source worksheets with audit trails.