RE: Invisible Fence System For Pet Containment: The Technology & How it Works (Research-based)

akeelsingh (55)in #steemstem • 6 years ago

Sounds really interesting, can't wait for this technology to be implemented. Great post buddy.

6 years ago in #steemstem by akeelsingh (55)

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eurogee (65) 6 years ago

Perhaps not popular in Africa but it has been in use since 70's.

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