Back to library
Low Touch Signal
Postcards
Postcards are sent to external stakeholders to gather brief feedback, solicit reactions to findings, or invite participation in evaluation activities. They are designed to be simple, visually engaging, and require minimal effort from recipients.
When This Method Fits
Typical duration
Weeks
Typical cost
Low
Fidelity level
Mockup
Stage
Implementation
Hypothesis type
Desirability
Goal type
Deepen product-market fit, Maximize societal impact, Improve operational efficiency
Randomization
N/A
Study design
Individual case report
Minimum units needed
20
1Best Fit When
Best when you need very low-effort, broad-reach feedback and can accept a low response rate and shallow depth in exchange.