[Retracted] Intelligent Digital Currency and Dynamic Coding Service System Based on Internet of Things Technology

<table class="table-group" id="tab9"><tr><td><table class="table"><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr class="thead"><td class="align_left">Target location</td><td class="align_center">Right in front</td><td class="align_center">Upper left</td><td class="align_center">Top right</td><td class="align_center">Right rear</td></tr><tr><td class="thead-hr" colspan="5"><hr/></td></tr><tr><td class="align_left">Maximum positioning error of <i>X</i>-axis (cm)</td><td class="align_center">1</td><td class="align_center">1</td><td class="align_center">1</td><td class="align_center">1</td></tr><tr><td class="align_left">Maximum positioning error of <i>Y</i>-axis (cm)</td><td class="align_center">2</td><td class="align_center">1</td><td class="align_center">1</td><td class="align_center">2</td></tr><tr class="table-tr"><td colspan="5"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Complexity

tab9

Table 9

Table 9: [Retracted] Intelligent Digital Currency and Dynamic Coding Service System Based on Internet of Things Technology 