| No. | Item | Definition |
|---|---|---|
| 1. | account number | number identifying an account |
| 2. | alias | assumed or alternate name |
| 3. | appellation | a name or identifying term |
| 4. | ascertainment | finding out with certainty |
| 5. | assignment | giving something a category or role |
| 6. | attestation | formal confirmation or witness |
| 7. | attribution | assigning a cause or source |
| 8. | authentication | verification that something is genuine |
| 9. | badge | token showing identity or role |
| 10. | biometrics | body traits used for identity |
| 11. | brand | distinctive identifying name or mark |
| 12. | caption | text identifying an image |
| 13. | case number | number identifying a case |
| 14. | cataloging | listing and classifying systematically |
| 15. | categorization | placing into a category |
| 16. | certification | official confirmation in writing |
| 17. | characteristic | feature that helps identify |
| 18. | classification | grouping by shared type or features |
| 19. | clue | fact helping identify something |
| 20. | coding | assigning symbols for recognition |
| 21. | credentials | documents proving identity or status |
| 22. | denomination | a formal name or designation |
| 23. | description | words identifying by details |
| 24. | descriptor | word that identifies by description |
| 25. | designation | the act of specifying or naming |
| 26. | determination | the act of establishing what it is |
| 27. | diagnosis | identifying a condition or problem |
| 28. | distinguishing feature | feature that identifies uniquely |
| 29. | distinguishing mark | mark that sets apart |
| 30. | DNA matching | identification through DNA comparison |
| 31. | documentation | records proving identity or details |
| 32. | earmark | identifying characteristic or sign |
| 33. | employee number | number identifying a worker |
| 34. | enrollment | official recording of a person |
| 35. | epithet | descriptive identifying name or phrase |
| 36. | face recognition | identification by facial features |
| 37. | feature | noticeable part used to identify |
| 38. | filing | placing in an organized record |
| 39. | fingerprinting | identification by fingerprints |
| 40. | giveaway | obvious identifying sign |
| 41. | hallmark | distinctive identifying feature |
| 42. | handle | informal name or identifier |
| 43. | ID | proof or statement of identity |
| 44. | identifier | something that identifies |
| 45. | identifying feature | feature that sets something apart |
| 46. | identifying mark | distinctive mark for recognition |
| 47. | identity check | check to confirm who someone is |
| 48. | indexing | organizing for easy reference |
| 49. | indicator | sign pointing out identity or status |
| 50. | iris scan | eye-pattern identity check |
| 51. | key | guide for identifying symbols |
| 52. | label | word or tag identifying something |
| 53. | labeling | assigning a descriptive name or tag |
| 54. | license number | number identifying a license |
| 55. | linkage | a connection between related things |
| 56. | login | account identity for access |
| 57. | marker | sign used to identify something |
| 58. | marking | indicating with a sign or label |
| 59. | matching | showing correspondence between things |
| 60. | moniker | name or nickname |
| 61. | name | word used to identify someone |
| 62. | naming | stating what someone or something is |
| 63. | nomination | formal naming of a person |
| 64. | papers | identity or official documents |
| 65. | passcode | code used to verify identity |
| 66. | photo ID | identity document with photograph |
| 67. | picture ID | identity document with photo |
| 68. | PIN | number confirming user identity |
| 69. | pinpointing | locating or identifying exactly |
| 70. | profile | set of identifying traits |
| 71. | proof of identity | evidence showing who someone is |
| 72. | readout | displayed identifying information |
| 73. | recognition | the act of knowing what something is |
| 74. | recognizing | seeing and knowing what it is |
| 75. | record locator | code identifying a booking |
| 76. | recording | putting details into record |
| 77. | registration | official recording of identity or details |
| 78. | retinal scan | eye-based identity check |
| 79. | screen name | name used online |
| 80. | screening | checking for identity or traits |
| 81. | serial number | number identifying a specific item |
| 82. | signature | distinctive mark or identifying style |
| 83. | sorting | separating by kind or identity |
| 84. | specification | clear statement of exact identity |
| 85. | stamp | mark used for identification |
| 86. | student number | number identifying a student |
| 87. | tag | small label or identifier |
| 88. | tagging | marking with a label or identifier |
| 89. | telltale sign | clear sign of identity |
| 90. | title | name or designation of something |
| 91. | token | object serving as an identifier |
| 92. | tracking number | number identifying a shipment |
| 93. | trademark | distinctive identifying sign or feature |
| 94. | typing | classifying by type |
| 95. | user ID | identifier for a user account |
| 96. | username | name used for account identity |
| 97. | validation | confirmation of correctness or legitimacy |
| 98. | verification | confirmation of truth or identity |
| 99. | vetting | checking identity or suitability |
| 100. | voice recognition | identification by voice patterns |