[OSM-talk] What3words

[Lester Caine]

On 30/11/15 12:50, Colin Smale wrote:
> Correct, but the accuracy issue is a weakness in lat/lon based
> coordinates as well. If you use your consumer GPS or phone to find your
> lat/lon, you might indeed be a long way adrift and you might get
> different values on different occasions. Imagine that you were relying
> on that to get your shopping delivered...
Which is why you need something on the premises you are trying to access
even if that is only 'the pink door'

> In my example the party that needs to do the translation from w3w to
> lat/lon would be Amazon, and they will probably be paying w3w for a
> licence to do that.
But if two adjacent doors both have amazon landing mats there is still
no guarantee that the w3w tag is correct for one or other of those mats.
But I expect at some point some sort of bar code cross check would
evolve and the correct mat can be identified. As has already been
pointed out on the discussions on these droids, it only works when there
is a single story dwelling. Add 100 flats with one front door on a busy
street ... but personally I think there will be more losses due to
droids being intercepted in flight? :)

> On 2015-11-30 13:30, Lester Caine wrote:
> 
>> On 30/11/15 11:59, Colin Smale wrote:
>>> I think their big attraction is the 75% (their figure) of the world that
>>> doesn't have a functional address system. The added value in the UK is
>>> indeed zero. In some tribal village in Africa for example where an
>>> address might not get any better than "3rd mud hut on the left after the
>>> group of 3 trees" the idea of giving all the dwellings a simple address
>>> might open the world of e-commerce up to them. They will have an address
>>> to use, and Amazon's drones will be able to find them. Maybe not today,
>>> maybe not even tomorrow, but soon.
>>
>> But 'What3words' can't actually locate them ... you HAVE to convert it
>> to the GPS coordinates. Third hut on the left at least works without
>> needing a mobile phone :) Doing the reverse process you need an accurate
>> GPS system to establish the coordinates before you can convert that TO a
>> w3w title. If the mapping system is only accurate to 10mts your android
>> drone has a selection of targets. I've just looked up my own address in
>> the UK and depending on which map overlay I select I got four different
>> answers, some the next door addresses.

-- 
Lester Caine - G8HFL
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