Free Pairs: Label-Free Auditing of a Borrowed Face-Match Threshold at an Open Border

{"A":[0],"face-recognition":[1],"system":[2],"at":[3,46,101],"a":[4,16,24,60,68,89,94,129,149],"border":[5],"decides":[6],"\\"same":[7],"person\\"":[8],"with":[9,33],"one":[10,36,40,109,121],"distance":[11],"threshold,":[12,91],"usually":[13],"borrowed":[14,61],"from":[15,78],"benchmark":[17],"and":[18,55,65,113,127,141],"never":[19],"measured":[20],"on-site.":[21],"We":[22,51,123,132],"show":[23],"busy":[25],"crossing":[26],"supplies":[27],"hundreds":[28],"of":[29,97],"free":[30],"identity":[31],"pairs":[32,99],"no":[34,134],"labels:":[35],"unbroken":[37],"track":[38],"is":[39],"person,":[41],"two":[42,49,72,118],"tracks":[43],"on":[44],"screen":[45],"once":[47],"are":[48],"people.":[50],"use":[52],"these":[53],"must-link":[54],"cannot-link":[56],"constraints":[57],"to":[58,66,81,146,152],"audit":[59,85],"threshold":[62],"in":[63],"deployment":[64],"refuse":[67],"number":[69,151],"when":[70],"the":[71,84,105,114,125],"groups":[73],"overlap.":[74],"On":[75],"real":[76,150],"footage":[77],"an":[79],"India":[80],"Nepal":[82],"post":[83],"did":[86],"not":[87],"return":[88],"better":[90],"it":[92],"returned":[93],"defect:":[95],"42%":[96],"same-track":[98],"sat":[100],"stranger":[102],"distance,":[103],"meaning":[104],"tracker":[106],"was":[107,116,139],"passing":[108],"id":[110],"between":[111],"people":[112],"pipeline":[115],"averaging":[117],"faces":[119],"into":[120],"identity.":[122],"fix":[124],"aggregation":[126],"state":[128],"refusal":[130],"rule.":[131],"report":[133],"detection":[135],"accuracy,":[136],"because":[137],"none":[138],"measured,":[140],"say":[142],"what":[143],"would":[144],"have":[145],"happen":[147],"for":[148],"exist.":[153]}