I agree with MOTIVATED@LAST...the bandaids don't stick well in the shoes!!
That's why I go with one for cushioning...and overtape it with Athletic or medical tape. Others will just put the tape right on it, but I shudder at that...since if the adhesive really sticks, then the weakened skin is torn when you remove it later.... Ouch!!
Another alternative is moleskin. It comes in several compositions nowadays. Its adhesive on one side, and usually about 1/16 to 1/8" thick. You can cut a "Donut" shaped piece to go around the blister. This also works well. (I'm just too lazy!)
The moleskin can also be used on the shoe or intact skin for prevention....
Happy Feet for Walking!!