The Swedish tiger was used in Swedish propaganda during WW2. The wordplay is not exactly a shibboleth, but the wordplay requires an understanding of Swedish, "tiger" meaning both "tiger", as in the animal, and "to keep silent". The meaning, then, is that you should not blabber about what might be sensitive things and so endanger your nation.
A shibboleth , in its original signification and in a meaning it still bears today, is a word or custom whose variations in pronunciation or style can be used to differentiate members of ingroups from those of outgroups. Within the mindset of the ingroup, a connotation or value judgment of correct/incorrect or superior/inferior can be ascribed to the two variants.
Nowadays, eCommerce is a excellent shibboleth of business, eCommerce means selling and buying your product over electronic, grocery, handicraft, fashion materials and etc. The online store has became a major activity over internet. also eCommerce business has got gigantic importance from youth. eCommerce business is a full blown business for the newly business entrepreneur. This concept of online store is hugely eminent nowadays.