What device isn't open?
The device is a camera.
    src        edge_attr  dst
0     0  to the right of    9
1     1   to the left of    4
2     1  to the right of    9
3     4  to the right of    6
4     4  to the right of    5
5     4  to the right of    1
6     5       sitting on    0
7     5      in front of    8
8     5   to the left of    4
9     5   to the left of    6
10    5  to the right of    9
11    5               on    0
12    6   to the left of    4
13    6  to the right of    5
14    6  to the right of    9
15    8       sitting on    0
16    8           behind    5
17    8           behind    9
18    9       sitting on    0
19    9      in front of    8
20    9   to the left of    6
21    9   to the left of    5
22    9   to the left of    1
23    9   to the left of    0
24    9   to the left of   10
25   10  to the right of    9
26   11       sitting on   12
27   11        on top of   12
28   12       sitting on    0