Don't have to input a code or pattern they can't make you self incriminate, but biometrics are assumed to be taken upon arrest so some states allow the coo to press your phone against your thumb to unlock. Or show it your face
It's an isometric triangle. Do the stance and press your arms together. Either up and down or at an angle the tension base eliminates small motor movevement from your elbow and shoulder. For me it's more stable than a pistol out there on the end of my fist alone. The other hand/arm helps
Looks like a weedeater drive cable.
A good cane with a hame head would serve you better and invoke less time to employ or questions if used.
Plenty of easy to find cane technique.