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Devices and systems are described including a walking aid including a linear rod having a first end and a second end, a hand grip disposed in proximity to the first end of the linear rod, two or more extendable and retractable self-leveling load-bearing feet at the second end of the linear rod, at l

Devices and systems are described including a walking aid including a linear rod having a first end and a second end, a hand grip disposed in proximity to the first end of the linear rod, two or more extendable and retractable self-leveling load-bearing feet at the second end of the linear rod, at least one sensor configured to detect a parameter of a walking surface in proximity to the second end of the linear rod, and a controller including a microprocessor and circuitry, the controller operably coupled to the two or more extendable and retractable self-leveling load-bearing feet and the at least one sensor, and including circuitry configured to receive information regarding the detected parameter of the walking surface from the at least one sensor and circuitry configured to actuate at least one of the two or more extendable and retractable self-leveling load-bearing feet in response to the information regarding the detected parameter of the walking surface.

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1. A walking aid comprising: a linear rod having a first end and a second end;a hand grip disposed in proximity to the first end of the linear rod;two or more extendable and retractable load-bearing feet at the second end of the linear rod, wherein at least one of the two or more extendable and retr

1. A walking aid comprising: a linear rod having a first end and a second end;a hand grip disposed in proximity to the first end of the linear rod;two or more extendable and retractable load-bearing feet at the second end of the linear rod, wherein at least one of the two or more extendable and retractable load-bearing feet has two or more telescoping segments;at least one sensor configured to detect a parameter of a walking surface in proximity to the second end of the linear rod; anda controller including a microprocessor and circuitry, the controller operably coupled to the two or more extendable and retractable load-bearing feet and the at least one sensor and including circuitry configured to receive information regarding the detected parameter of the walking surface from the at least one sensor and circuitry configured to actuate at least one of the two or more extendable and retractable load-bearing feet in response to the information regarding the detected parameter of the walking surface. 2. The walking aid of claim 1, comprising a user-activated control mechanism to control extension and retraction of the two or more extendable and retractable load-bearing feet. 3. The walking aid of claim 1, wherein at least one of the two or more extendable and retractable load-bearing feet has a pivot at a connection to the linear rod. 4. The walking aid of claim 1, wherein at least one of the two or more extendable and retractable load-bearing feet has a pivot at a connection to the linear rod and one or more additional pivots along a length of the at least one of the two or more extendable and retractable load-bearing feet. 5. The walking aid of claim 1, wherein at least one of the two or more extendable and retractable load-bearing feet is rotatable. 6. The walking aid of claim 1, wherein at least one of the two or more extendable and retractable load-bearing feet is configured to retract for storage on a side of the linear rod. 7. The walking aid of claim 1, wherein at least one of the two or more extendable and retractable load-bearing feet is configured to retract for storage into an interior portion of the linear rod. 8. The walking aid of claim 1, wherein the at least one sensor comprises a tactile sensor, tilt sensor, an inclinometer, a texture sensor, an accelerometer, or a gyroscope. 9. The walking aid of claim 1, wherein the at least one sensor comprises at least one camera. 10. The walking aid of claim 1, wherein the at least one sensor includes at least one proximity sensor. 11. The walking aid of claim 1, wherein the at least one sensor includes at least one pressure sensor. 12. The walking aid of claim 1, wherein the parameter of the walking surface includes at least one of a surface type, a friction coefficient, a roughness, a slope, an edge, a height, a distance, or a bump. 13. The walking aid of claim 1, wherein the controller includes circuitry configured to actuate extension or retraction of at least one of the two or more extendable and retractable load-bearing feet in response to the information regarding the detected parameter of the walking surface before the at least one of the two or more extendable and retractable load-bearing feet contacts the walking surface. 14. The walking aid of claim 1, wherein the controller includes circuitry configured to independently and automatically actuate the two or more extendable and retractable load-bearing feet to a configuration based on a position of the walking aid relative to the walking surface. 15. The walking aid of claim 1, wherein the controller includes circuitry configured to independently and automatically actuate the two or more extendable and retractable load-bearing feet to a configuration based on a position variance of the walking aid from vertical. 16. The walking aid of claim 1, comprising at least one second sensor configured to detect a parameter of the walking aid. 17. The walking aid of claim 16, wherein the parameter of the walking aid comprises at least one of tip motion, movement, position relative to the walking surface, tilt angle relative to the walking surface, or distance from the walking surface. 18. The walking aid of claim 16, wherein the controller is operably coupled to the at least one second sensor, the controller including circuitry configured to receive information regarding the detected parameter of the walking aid from the at least one second sensor and circuitry configured to actuate at least one of the two or more extendable and retractable self leveling load-bearing feet in response to the information regarding the detected parameter of the walking aid. 19. The walking aid of claim 18, wherein the controller includes circuitry configured to actuate the at least one of the two or more extendable and retractable load-bearing feet in response to movement of the walking aid after it loses contact with the walking surface. 20. The walking aid of claim 18, wherein the controller includes circuitry configured to actuate the at least one of the two or more extendable and retractable load-bearing feet to orient said at least one of the two or more extendable and retractable load-bearing feet relative to an orientation of the walking aid. 21. The walking aid of claim 16, wherein the at least one second sensor configured to detect the parameter of the walking aid comprises at least one of a tactile sensor, a tilt sensor, an inclinometer, an accelerometer, a gyroscope, a camera, a whisker sensor, a proximity sensor, or a pressure sensor. 22. The walking aid of claim 1, comprising a mechanical energy harvester configured to store electrical or mechanical energy to power actuation of the two or more extendable and retractable load-bearing feet. 23. The walking aid of claim 1, comprising a warning system operably coupled to the controller and configured to alert a user, wherein the warning system comprises at least one of an audible warning system, an optical warning system, or a haptic warning system. 24. A system, comprising: a walking aid including a linear rod having a first end and a second end;a hand grip disposed in proximity to the first end of the linear rod;two or more extendable and retractable self leveling load-bearing feet at the second end of the linear rod;at least one receiver; anda controller attached to the linear rod and operably coupled to the at least one receiver and to the two or more extendable and retractable load-bearing feet; anda remote signaling device in wireless communication with the at least one receiver of the walking aid, the remote signaling device configured to transmit a signal,wherein the at least one receiver is configured to receive the signal from the remote signaling device and configured to transform the signal into information regarding a location of the walking aid in an environment,wherein the controller includes circuitry configured to actuate at least one of the two or more extendable and retractable load-bearing feet based on the information regarding the location of the walking aid in the environment; andwherein the controller includes circuitry configured to correlate the information regarding the location of the walking aid in the environment with a map of the environment. 25. The system of claim 24, wherein the walking aid includes at least one sensor operably coupled to the controller and configured to detect a parameter of a walking surface in proximity to the walking aid, wherein the controller includes circuitry configured to receive information regarding the detected parameter of the walking surface from the at least one sensor and circuitry configured to actuate at least one of the two or more extendable and retractable load-bearing feet in response to the information regarding the detected parameter of the walking surface. 26. The system of claim 25, wherein the at least one sensor comprises at least one of a tactile sensor, a tilt sensor, an inclinometer, a texture sensor, an accelerometer, a gyroscope, a camera, a whisker sensor, a proximity sensor, or a pressure sensor. 27. The system of claim 24, wherein the at least one receiver comprises an electromagnetic signal receiver, a radiofrequency signal receiver, a photodetector, or an infrared sensor. 28. The system of claim 24, wherein the at least one receiver comprises at least one magnetic signal receiver. 29. The system of claim 24, wherein the at least one receiver comprises at least one microphone. 30. The system of claim 24, wherein the remote signaling device includes one or more beacons. 31. The system of claim 30, wherein at least one of the one or more beacons emits a radio signal, a magnetic signal, an acoustic signal, an electromagnetic signal, or an optical signal. 32. The system of claim 24, wherein the remote signaling device includes an electromagnetic signal generator, a microwave signal generator, a magnetic signal generator, or an acoustic signal generator. 33. The system of claim 24, wherein the remote signaling device includes at least one of a radiofrequency signal generator and a radiofrequency signal receiver. 34. The system of claim 24, wherein the remote signaling device includes a local positioning system. 35. The system of claim 24, wherein at least one of the two or more extendable and retractable load-bearing feet has a pivot at a connection to the linear rod and two or more telescoping segments. 36. The system of claim 24, wherein at least one of the two or more extendable and retractable load-bearing feet has a pivot at a connection to the linear rod and one or more additional pivots along a length of the at least one of the two or more extendable and retractable load-bearing feet. 37. The system of claim 24, wherein at least one of the two or more extendable and retractable load-bearing feet is configured to retract for storage on a side of the linear rod. 38. The system of claim 24, wherein at least one of the two or more extendable and retractable load-bearing feet is configured to retract for storage into an interior portion of the linear rod. 39. The system of claim 24, wherein the walking aid includes at least one second sensor operably coupled to the controller and configured to detect a parameter of the walking aid, wherein the controller includes circuitry configured to receive information regarding the detected parameter of the walking aid from the at least one second sensor and circuitry configured to actuate at least one of the two or more extendable and retractable load-bearing feet in response to the information regarding the detected parameter of the walking aid. 40. The system of claim 24, wherein the walking aid includes a mechanical energy harvester configured to store electrical or mechanical energy to power actuation of the two or more extendable and retractable load-bearing feet. 41. The system of claim 24, wherein the walking aid includes a warning system operably coupled to the controller and configured to alert a user.