I really like the look of this virtual key/padlock @abduhawab. Here's my review:
Pros:

• looks great : slick and modern
• seems to be easy to use you can share the keys with close friends and family
• though the model is young looking, it is the sort of gadget that could be used for helping our ageing population to stay safe and those caring for them gaining access to their property easily.

Cons:

• Not clear from video, but I guess that lack of connectivity will be a problem in a rural area ?
• not clear from website if it's widely available / tested yet.
• it needs everyone holding the keys to synchronise and keep data safe.

Many thanks ! I look forward to seeing this produced offered more widely and 'good bye dangling keys'😁 ....