English edit

Etymology edit

signature +‎ -less

Adjective edit

signatureless (not comparable)

  1. Without a signature.
    • 2015 July 6, “How to Establish and Follow up a Large Prospective Cohort Study in the 21st Century - Lessons from UK COSMOS”, in PLOS ONE[1], →DOI:
      For all subsequent phases, we used a fully web-based recruitment and data collection process comprising signatureless electronic consent (e-consent) form, registration form and questionnaire (Table 1).