An Amazon Standard Identification Number (ASIN) is a 10-character alphanumeric unique identifier assigned by Amazon.com and its partners for product identification within the Amazon organization (summary from [Wikipedia](https://en.wikipedia.org/wiki/Amazon_Standard_Identification_Number)'s article).
Note also that this is a definition for how to include ASINs in Schema.org data, and not a definition of ASINs in general - see documentation from Amazon for authoritative details. ASINs are most commonly encoded as text strings, but the \[asin\] property supports URL/URI as potential values too.
A color swatch image, visualizing the color of a [Product](https://schema.org/Product). Should match the textual description specified in the [color](https://schema.org/color) property. This can be a URL or a fully described ImageObject.
The location at which an item can be viewed or experienced in-person.
Certification information about a product, organization, service, place, or person.
The [GS1 digital link](https://www.gs1.org/standards/gs1-digital-link) associated with the object. This URL should conform to the particular requirements of digital links. The link should only contain the Application Identifiers (AIs) that are relevant for the entity being annotated, for instance a [Product](https://schema.org/Product) or an [Organization](https://schema.org/Organization), and for the correct granularity. In particular, for products:
- A Digital Link that contains a serial number (AI `21`) should only be present on instances of [IndividualProduct](https://schema.org/IndividualProduct)
- A Digital Link that contains a lot number (AI `10`) should be annotated as [SomeProducts](https://schema.org/SomeProducts) if only products from that lot are sold, or [IndividualProduct](https://schema.org/IndividualProduct) if there is only a specific product.
- A Digital Link that contains a global model number (AI `8013`) should be attached to a [Product](https://schema.org/Product) or a [ProductModel](https://schema.org/ProductModel).
Other item types should be adapted similarly.
The [mobileUrl](https://schema.org/mobileUrl) property is provided for specific situations in which data consumers need to determine whether one of several provided URLs is a dedicated 'mobile site'.
To discourage over-use, and reflecting intial usecases, the property is expected only on [Product](https://schema.org/Product) and [Offer](https://schema.org/Offer), rather than [Thing](https://schema.org/Thing). The general trend in web technology is towards [responsive design](https://en.wikipedia.org/wiki/Responsive_web_design) in which content can be flexibly adapted to a wide range of browsing environments. Pages and sites referenced with the long-established [url](https://schema.org/url) property should ideally also be usable on a wide variety of devices, including mobile phones. In most cases, it would be pointless and counter productive to attempt to update all [url](https://schema.org/url) markup to use [mobileUrl](https://schema.org/mobileUrl) for more mobile-oriented pages. The property is intended for the case when items (primarily [Product](https://schema.org/Product) and [Offer](https://schema.org/Offer)) have extra URLs hosted on an additional "mobile site" alongside the main one. It should not be taken as an endorsement of this publication style.
Provides negative considerations regarding something, most typically in pro/con lists for reviews (alongside [positiveNotes](https://schema.org/positiveNotes)). For symmetry
In the case of a [Review](https://schema.org/Review), the property describes the [itemReviewed](https://schema.org/itemReviewed) from the perspective of the review; in the case of a [Product](https://schema.org/Product), the product itself is being described. Since product descriptions tend to emphasise positive claims, it may be relatively unusual to find [negativeNotes](https://schema.org/negativeNotes) used in this way. Nevertheless for the sake of symmetry, [negativeNotes](https://schema.org/negativeNotes) can be used on [Product](https://schema.org/Product).
The property values can be expressed either as unstructured text (repeated as necessary), or if ordered, as a list (in which case the most negative is at the beginning of the list).
A person or organization who owns this Thing.
Provides positive considerations regarding something, for example product highlights or (alongside [negativeNotes](https://schema.org/negativeNotes)) pro/con lists for reviews.
In the case of a [Review](https://schema.org/Review), the property describes the [itemReviewed](https://schema.org/itemReviewed) from the perspective of the review; in the case of a [Product](https://schema.org/Product), the product itself is being described.
The property values can be expressed either as unstructured text (repeated as necessary), or if ordered, as a list (in which case the most positive is at the beginning of the list).