![](https://s3images.coroflot.com/user_files/individual_files/556591_4_zm74_rty_dgoq3uhct6bria.png)
Initial concept sketches for different designs
![](https://s3images.coroflot.com/user_files/individual_files/556591_dfnnjpamomwmomwnuh2_r4ddq.png)
Three different concepts being user tested
![](https://s3images.coroflot.com/user_files/individual_files/556591_quuo3svvilzrq8hg2g_fic59n.jpg)
Iterations of 3D printed prototypes
![](https://s3images.coroflot.com/user_files/individual_files/556591_m6gvatoqdmhopib7_ztfqhzbp.jpg)
Iterations of silicone molded buttons for user testing
![](https://s3images.coroflot.com/user_files/individual_files/556591_rraziv9oaccyachf0j5tiijd4.jpg)
Final design
![](https://s3images.coroflot.com/user_files/individual_files/556591_rk54fli3kdvu_r4nsgs7tpyzp.jpg)
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