A slip component for a downhole tool has a bearing surface hard surface treated. Between respective substrates which are arranged to face each other with liquid crystal inserted therebetween, the sealing materials which fix another substrate to one substrate while being used for sealing the liquid crystal are formed and a plurality of liquid crystal filling ports are formed in the sealing material. Using the metadata and event identification, the content is created into clusters, which can be confirmed by the user as actual events. Also a novel method for measuring and adjusting the amount time spent applying and releasing pressure.