Protecting Check-In Data Privacy in Blockchain Transactions with Preserving High Trajectory Pattern Utility

<table class="figure-group"><tr class="fig-image" id="a"><td><object data="https://static-preview.hindawi.com/articles/wcmc/volume-2022/9358531/figures/9358531.fig.001a.svgz" name="9358531.fig.001a" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(a) </b>A set of user history trajectory</td></tr><tr class="fig-image" id="b"><td><object data="https://static-preview.hindawi.com/articles/wcmc/volume-2022/9358531/figures/9358531.fig.001b.svgz" name="9358531.fig.001b" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(b) </b>The random method is used to protect the sensitive check-in in the trajectory</td></tr><tr class="fig-image" id="c"><td><object data="https://static-preview.hindawi.com/articles/wcmc/volume-2022/9358531/figures/9358531.fig.001c.svgz" name="9358531.fig.001c" type="image/svg+xml"></object></td></tr><tr class="fig-caption"><td><b>(c) </b>This experiment is used to protect the sensitive check-in in the trajectory</td></tr></table>

<div>User trajectory set and anonymous trajectory.</div>

Wireless Communications and Mobile Computing

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Figure 1

Figure 1: Protecting Check-In Data Privacy in Blockchain Transactions with Preserving High Trajectory Pattern Utility 