After re-reading various pieces of information provided by Augustus Martin, the previous designs are null and void. If thermic ink were to be used then it would appear and not disappear, unlike the designs shown that have the opaque layer disappear when heat is applied. This means two things, firstly the colours of the stamps are irrelevant as they will be screen printed with a layer of thermic ink overlayed and secondly the colour of change will be to a grey, black or pink.

After having some one-to-one feedback it was suggested that the problem may be overcome by looking more towards technology. Research has been conducted looked at QR tags and RFID as well as different reactive materials and so far the results seem not to aid the design. it was suggested that I ‘go back to the drawing board’ but the fear is that this will result in a half finished concept with little research.

More research will be conducted into permenant heat reactive colour changing inks / materials and hopefully the resolution can be found in time. If only there had been guidance as to which briefs were more suited to interaction designers, however I feel that the lines between the disciplines that ocupy a similar area are beomcing more blurred. I could be wrong of course.