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Fig 1.

PRISMA research process.

(Source: the authors’ own elaboration) (Keywords: human / computer / interaction / hospitality / tourism / ethics, each of the words shown in different research endeavour).

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Fig 1 Expand

Fig 2.

Keyword co-occurrence map.

(Source: our elaboration from the VOSviewer software).

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Fig 2 Expand

Fig 3.

The number of published papers as per the publishing years.

(Source: Authors’ elaboration).

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Fig 3 Expand

Fig 4.

Keywords (robot AND tourism OR hospitality AND COVID) density map.

(Source: our elaboration).

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Fig 4 Expand